diff --git a/curriculum/gulpfile.js b/curriculum/gulpfile.js
index 61355c7bc3..249f54004d 100644
--- a/curriculum/gulpfile.js
+++ b/curriculum/gulpfile.js
@@ -1,9 +1,17 @@
 const fs = require('fs-extra');
 const gulp = require('gulp');
+const through2 = require('through2');
+const markdownlint = require('markdownlint');
 
 const { locale } = require('../config/env.json');
-
 const { getChallengesForLang } = require('./getChallenges');
+const { testedLangs } = require('./utils');
+const lintYAML = require('./tools/markdown-yaml');
+const lintConfig = require('./tools/.markdownlintrc.js');
+
+/**
+ * Tasks
+ **/
 
 function generateCurriculum(done) {
   return getChallengesForLang(locale)
@@ -21,7 +29,36 @@ function watchFiles() {
   return gulp.watch('./challenges/**/*.md', generateCurriculum);
 }
 
+function lint() {
+  return gulp.src(globLangs(testedLangs()), { read: false }).pipe(
+    through2.obj(function obj(file, enc, next) {
+      const options = {
+        files: [file.path],
+        config: lintConfig,
+        customRules: [lintYAML]
+      };
+      markdownlint(options, function callback(err, result) {
+        const resultString = (result || '').toString();
+        if (resultString) {
+          process.exitCode = 1;
+          console.log(resultString);
+        }
+        next(err, file);
+      });
+    })
+  );
+}
+
 const defaultTask = gulp.series(generateCurriculum, watchFiles);
 
+/**
+ * Helper functions
+ **/
+
+function globLangs(langs) {
+  return langs.map(lang => `./challenges/${lang}/**/*.md`);
+}
+
 gulp.task('default', defaultTask);
 gulp.task('build', generateCurriculum);
+gulp.task('lint', lint);
diff --git a/curriculum/package-lock.json b/curriculum/package-lock.json
index 168a3ca8d9..9e2a8eba4d 100644
--- a/curriculum/package-lock.json
+++ b/curriculum/package-lock.json
@@ -3141,6 +3141,18 @@
             "split2": "^2.0.0",
             "through2": "^2.0.0",
             "trim-off-newlines": "^1.0.0"
+          },
+          "dependencies": {
+            "through2": {
+              "version": "2.0.5",
+              "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+              "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+              "dev": true,
+              "requires": {
+                "readable-stream": "~2.3.6",
+                "xtend": "~4.0.1"
+              }
+            }
           }
         },
         "debug": {
@@ -3714,6 +3726,18 @@
             "split2": "^2.0.0",
             "through2": "^2.0.0",
             "trim-off-newlines": "^1.0.0"
+          },
+          "dependencies": {
+            "through2": {
+              "version": "2.0.5",
+              "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+              "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+              "dev": true,
+              "requires": {
+                "readable-stream": "~2.3.6",
+                "xtend": "~4.0.1"
+              }
+            }
           }
         },
         "debug": {
@@ -6038,6 +6062,16 @@
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
           "dev": true
+        },
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
         }
       }
     },
@@ -6088,6 +6122,16 @@
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
           "dev": true
+        },
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
         }
       }
     },
@@ -6576,6 +6620,12 @@
         "once": "^1.4.0"
       }
     },
+    "entities": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
+      "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
+      "dev": true
+    },
     "env-ci": {
       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/env-ci/-/env-ci-3.2.0.tgz",
@@ -7798,6 +7848,18 @@
       "requires": {
         "graceful-fs": "^4.1.11",
         "through2": "^2.0.3"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "fs-readdir-recursive": {
@@ -7825,28 +7887,28 @@
       "dependencies": {
         "abbrev": {
           "version": "1.1.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==",
           "dev": true,
           "optional": true
         },
         "ansi-regex": {
           "version": "2.1.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
           "dev": true,
           "optional": true
         },
         "aproba": {
           "version": "1.2.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw==",
           "dev": true,
           "optional": true
         },
         "are-we-there-yet": {
           "version": "1.1.4",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
           "dev": true,
           "optional": true,
@@ -7857,14 +7919,14 @@
         },
         "balanced-match": {
           "version": "1.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
           "dev": true,
           "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
           "dev": true,
           "optional": true,
@@ -7875,40 +7937,40 @@
         },
         "chownr": {
           "version": "1.0.1",
-          "resolved": false,
+          "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.0.1.tgz",
           "integrity": "sha1-4qdQQqlVGQi+vSW4Uj1fl2nXkYE="
         },
         "code-point-at": {
           "version": "1.1.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
           "dev": true,
           "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
           "dev": true,
           "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
           "dev": true,
           "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
           "dev": true,
           "optional": true
         },
         "debug": {
           "version": "2.6.9",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
           "dev": true,
           "optional": true,
@@ -7918,28 +7980,28 @@
         },
         "deep-extend": {
           "version": "0.5.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-N8vBdOa+DF7zkRrDCsaOXoCs/E2fJfx9B9MrKnnSiHNh4ws7eSys6YQE4KvT1cecKmOASYQBhbKjeuDD9lT81w==",
           "dev": true,
           "optional": true
         },
         "delegates": {
           "version": "1.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
           "dev": true,
           "optional": true
         },
         "detect-libc": {
           "version": "1.0.3",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
           "dev": true,
           "optional": true
         },
         "fs-minipass": {
           "version": "1.2.5",
-          "resolved": false,
+          "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.5.tgz",
           "integrity": "sha512-JhBl0skXjUPCFH7x6x61gQxrKyXsxB5gcgePLZCwfyCGGsTISMoIeObbrvVeP6Xmyaudw4TT43qV2Gz+iyd2oQ==",
           "requires": {
             "minipass": "^2.2.1"
@@ -7947,14 +8009,14 @@
         },
         "fs.realpath": {
           "version": "1.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
           "dev": true,
           "optional": true
         },
         "gauge": {
           "version": "2.7.4",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
           "dev": true,
           "optional": true,
@@ -7971,7 +8033,7 @@
         },
         "glob": {
           "version": "7.1.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
           "dev": true,
           "optional": true,
@@ -7986,14 +8048,14 @@
         },
         "has-unicode": {
           "version": "2.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-4Ob+aijPUROIVeCG0Wkedx3iqLk=",
           "dev": true,
           "optional": true
         },
         "iconv-lite": {
           "version": "0.4.21",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-En5V9za5mBt2oUA03WGD3TwDv0MKAruqsuxstbMUZaj9W9k/m1CV/9py3l0L5kw9Bln8fdHQmzHSYtvpvTLpKw==",
           "dev": true,
           "optional": true,
@@ -8003,7 +8065,7 @@
         },
         "ignore-walk": {
           "version": "3.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-DTVlMx3IYPe0/JJcYP7Gxg7ttZZu3IInhuEhbchuqneY9wWe5Ojy2mXLBaQFUQmo0AW2r3qG7m1mg86js+gnlQ==",
           "dev": true,
           "optional": true,
@@ -8013,7 +8075,7 @@
         },
         "inflight": {
           "version": "1.0.6",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=",
           "dev": true,
           "optional": true,
@@ -8024,21 +8086,21 @@
         },
         "inherits": {
           "version": "2.0.3",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
           "dev": true,
           "optional": true
         },
         "ini": {
           "version": "1.3.5",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
           "dev": true,
           "optional": true
         },
         "is-fullwidth-code-point": {
           "version": "1.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
           "optional": true,
@@ -8048,14 +8110,14 @@
         },
         "isarray": {
           "version": "1.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
           "dev": true,
           "optional": true
         },
         "minimatch": {
           "version": "3.0.4",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
           "dev": true,
           "optional": true,
@@ -8065,16 +8127,15 @@
         },
         "minimist": {
           "version": "0.0.8",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
           "dev": true,
           "optional": true
         },
         "minipass": {
           "version": "2.2.4",
-          "resolved": false,
+          "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.2.4.tgz",
           "integrity": "sha512-hzXIWWet/BzWhYs2b+u7dRHlruXhwdgvlTMDKC6Cb1U7ps6Ac6yQlR39xsbjWJE377YTCtKwIXIpJ5oP+j5y8g==",
-          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -8082,7 +8143,7 @@
         },
         "minizlib": {
           "version": "1.1.0",
-          "resolved": false,
+          "resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.1.0.tgz",
           "integrity": "sha512-4T6Ur/GctZ27nHfpt9THOdRZNgyJ9FZchYO1ceg5S8Q3DNLCKYy44nCZzgCJgcvx2UM8czmqak5BCxJMrq37lA==",
           "requires": {
             "minipass": "^2.2.1"
@@ -8090,7 +8151,7 @@
         },
         "mkdirp": {
           "version": "0.5.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "dev": true,
           "optional": true,
@@ -8100,14 +8161,14 @@
         },
         "ms": {
           "version": "2.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
           "dev": true,
           "optional": true
         },
         "needle": {
           "version": "2.2.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-eFagy6c+TYayorXw/qtAdSvaUpEbBsDwDyxYFgLZ0lTojfH7K+OdBqAF7TAFwDokJaGpubpSGG0wO3iC0XPi8w==",
           "dev": true,
           "optional": true,
@@ -8119,7 +8180,7 @@
         },
         "node-pre-gyp": {
           "version": "0.10.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-G7kEonQLRbcA/mOoFoxvlMrw6Q6dPf92+t/l0DFSMuSlDoWaI9JWIyPwK0jyE1bph//CUEL65/Fz1m2vJbmjQQ==",
           "dev": true,
           "optional": true,
@@ -8138,7 +8199,7 @@
         },
         "nopt": {
           "version": "4.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=",
           "dev": true,
           "optional": true,
@@ -8149,14 +8210,14 @@
         },
         "npm-bundled": {
           "version": "1.0.3",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-ByQ3oJ/5ETLyglU2+8dBObvhfWXX8dtPZDMePCahptliFX2iIuhyEszyFk401PZUNQH20vvdW5MLjJxkwU80Ow==",
           "dev": true,
           "optional": true
         },
         "npm-packlist": {
           "version": "1.1.10",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-AQC0Dyhzn4EiYEfIUjCdMl0JJ61I2ER9ukf/sLxJUcZHfo+VyEfz2rMJgLZSS1v30OxPQe1cN0LZA1xbcaVfWA==",
           "dev": true,
           "optional": true,
@@ -8167,7 +8228,7 @@
         },
         "npmlog": {
           "version": "4.1.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==",
           "dev": true,
           "optional": true,
@@ -8180,21 +8241,21 @@
         },
         "number-is-nan": {
           "version": "1.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
           "dev": true,
           "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
           "dev": true,
           "optional": true
         },
         "once": {
           "version": "1.4.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
           "dev": true,
           "optional": true,
@@ -8204,21 +8265,21 @@
         },
         "os-homedir": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-/7xJiDNuDoM94MFox+8VISGqf7M=",
           "dev": true,
           "optional": true
         },
         "os-tmpdir": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=",
           "dev": true,
           "optional": true
         },
         "osenv": {
           "version": "0.1.5",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==",
           "dev": true,
           "optional": true,
@@ -8229,21 +8290,21 @@
         },
         "path-is-absolute": {
           "version": "1.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
           "dev": true,
           "optional": true
         },
         "process-nextick-args": {
           "version": "2.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==",
           "dev": true,
           "optional": true
         },
         "rc": {
           "version": "1.2.7",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-LdLD8xD4zzLsAT5xyushXDNscEjB7+2ulnl8+r1pnESlYtlJtVSoCMBGr30eDRJ3+2Gq89jK9P9e4tCEH1+ywA==",
           "dev": true,
           "optional": true,
@@ -8256,7 +8317,7 @@
           "dependencies": {
             "minimist": {
               "version": "1.2.0",
-              "resolved": false,
+              "resolved": "",
               "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
               "dev": true,
               "optional": true
@@ -8265,7 +8326,7 @@
         },
         "readable-stream": {
           "version": "2.3.6",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
           "optional": true,
@@ -8281,7 +8342,7 @@
         },
         "rimraf": {
           "version": "2.6.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
           "dev": true,
           "optional": true,
@@ -8291,48 +8352,47 @@
         },
         "safe-buffer": {
           "version": "5.1.1",
-          "resolved": false,
-          "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-          "optional": true
+          "resolved": "",
+          "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
         },
         "safer-buffer": {
           "version": "2.1.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
           "dev": true,
           "optional": true
         },
         "sax": {
           "version": "1.2.4",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
           "dev": true,
           "optional": true
         },
         "semver": {
           "version": "5.5.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA==",
           "dev": true,
           "optional": true
         },
         "set-blocking": {
           "version": "2.0.0",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
           "dev": true,
           "optional": true
         },
         "signal-exit": {
           "version": "3.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
           "dev": true,
           "optional": true
         },
         "string-width": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
           "optional": true,
@@ -8344,7 +8404,7 @@
         },
         "string_decoder": {
           "version": "1.1.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "dev": true,
           "optional": true,
@@ -8354,7 +8414,7 @@
         },
         "strip-ansi": {
           "version": "3.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "optional": true,
@@ -8364,21 +8424,21 @@
         },
         "strip-json-comments": {
           "version": "2.0.1",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
           "dev": true,
           "optional": true
         },
         "util-deprecate": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
           "dev": true,
           "optional": true
         },
         "wide-align": {
           "version": "1.1.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
           "dev": true,
           "optional": true,
@@ -8388,16 +8448,15 @@
         },
         "wrappy": {
           "version": "1.0.2",
-          "resolved": false,
+          "resolved": "",
           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
           "dev": true,
           "optional": true
         },
         "yallist": {
           "version": "3.0.2",
-          "resolved": false,
-          "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=",
-          "optional": true
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
+          "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k="
         }
       }
     },
@@ -8486,6 +8545,16 @@
           "requires": {
             "through2": "~2.0.0"
           }
+        },
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
         }
       }
     },
@@ -8524,6 +8593,16 @@
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
           "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
           "dev": true
+        },
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
         }
       }
     },
@@ -11140,6 +11219,15 @@
         "resolve": "^1.1.7"
       }
     },
+    "linkify-it": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.1.0.tgz",
+      "integrity": "sha512-4REs8/062kV2DSHxNfq5183zrqXMl7WP0WzABH9IeJI+NLm429FgE1PDecltYfnOoFDFlZGh2T8PfZn0r+GTRg==",
+      "dev": true,
+      "requires": {
+        "uc.micro": "^1.0.1"
+      }
+    },
     "lint-staged": {
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-7.2.0.tgz",
@@ -12465,6 +12553,28 @@
       "integrity": "sha512-XUi5HJhhV5R74k8/0H2oCbCiYf/u4cO/rX8tnGkRvrqhsr5BRNU6Mg0yt/8UIx1iIS8220BNJsDb7XnILhLepw==",
       "dev": true
     },
+    "markdown-it": {
+      "version": "8.4.2",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-8.4.2.tgz",
+      "integrity": "sha512-GcRz3AWTqSUphY3vsUqQSFMbgR38a4Lh3GWlHRh/7MRwz8mcu9n2IO7HOh+bXHrR9kOPDl5RNCaEsrneb+xhHQ==",
+      "dev": true,
+      "requires": {
+        "argparse": "^1.0.7",
+        "entities": "~1.1.1",
+        "linkify-it": "^2.0.0",
+        "mdurl": "^1.0.1",
+        "uc.micro": "^1.0.5"
+      }
+    },
+    "markdownlint": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/markdownlint/-/markdownlint-0.15.0.tgz",
+      "integrity": "sha512-sNcrSrUgpNbTQX6rPIMd+RI9rAryGTEbDI9VFpcFyijlC5g8gpkma49k5p98yFLdNbdcB3VW69UJ0smxvTVw6g==",
+      "dev": true,
+      "requires": {
+        "markdown-it": "8.4.2"
+      }
+    },
     "marked": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/marked/-/marked-0.6.0.tgz",
@@ -17547,6 +17657,18 @@
         "remove-bom-buffer": "^3.0.0",
         "safe-buffer": "^5.1.0",
         "through2": "^2.0.3"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "remove-trailing-separator": {
@@ -18386,6 +18508,18 @@
       "dev": true,
       "requires": {
         "through2": "^2.0.2"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "sprintf-js": {
@@ -18696,13 +18830,12 @@
       "dev": true
     },
     "through2": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
-      "integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4=",
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/through2/-/through2-3.0.1.tgz",
+      "integrity": "sha512-M96dvTalPT3YbYLaKaCuwu+j06D/8Jfib0o/PxbVt6Amhv3dUAtW6rTV1jPgJSBG83I/e04Y6xkVdVhSRhi0ww==",
       "dev": true,
       "requires": {
-        "readable-stream": "^2.1.5",
-        "xtend": "~4.0.1"
+        "readable-stream": "2 || 3"
       }
     },
     "through2-filter": {
@@ -18713,6 +18846,18 @@
       "requires": {
         "through2": "~2.0.0",
         "xtend": "~4.0.0"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "time-stamp": {
@@ -18786,6 +18931,18 @@
       "dev": true,
       "requires": {
         "through2": "^2.0.3"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "to-vfile": {
@@ -18932,6 +19089,12 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "uc.micro": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.6.tgz",
+      "integrity": "sha512-8Y75pvTYkLJW2hWQHXxoqRgV7qb9B+9vFEtidML+7koHUFapnVJAZ6cKs+Qjz5Aw3aZWHMC6u0wJE3At+nSGwA==",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.4.9",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
@@ -19405,6 +19568,18 @@
         "value-or-function": "^3.0.0",
         "vinyl": "^2.0.0",
         "vinyl-sourcemap": "^1.1.0"
+      },
+      "dependencies": {
+        "through2": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.5.tgz",
+          "integrity": "sha512-/mrRod8xqpA+IHSLyGCQ2s8SPHiCDEeQJSep1jqLYeEUClOFG2Qsh+4FU6G9VeqpZnGW/Su8LQGc4YKni5rYSQ==",
+          "dev": true,
+          "requires": {
+            "readable-stream": "~2.3.6",
+            "xtend": "~4.0.1"
+          }
+        }
       }
     },
     "vinyl-sourcemap": {
diff --git a/curriculum/package.json b/curriculum/package.json
index fa0e1099d3..1cf894d861 100644
--- a/curriculum/package.json
+++ b/curriculum/package.json
@@ -15,6 +15,7 @@
   "main": "lib.js",
   "scripts": {
     "develop": "gulp",
+    "lint": "gulp lint",
     "semantic-release": "semantic-release",
     "pretest": "cd ../client && npm run build:workers",
     "test": "mocha --delay --reporter progress --bail"
@@ -54,11 +55,13 @@
     "lint-staged": "^7.2.0",
     "live-server": "^1.2.1",
     "lodash": "^4.17.11",
+    "markdownlint": "^0.15.0",
     "mocha": "5.2.0",
     "puppeteer": "1.11.0",
     "readdirp-walk": "^1.6.0",
     "rx": "^4.1.0",
     "semantic-release": "^15.13.3",
+    "through2": "^3.0.1",
     "validator": "^10.4.0"
   },
   "keywords": [
diff --git a/curriculum/test/test-challenges.js b/curriculum/test/test-challenges.js
index f4f05f2d6d..ba714463e5 100644
--- a/curriculum/test/test-challenges.js
+++ b/curriculum/test/test-challenges.js
@@ -27,8 +27,6 @@ const jsdom = require('jsdom');
 const dom = new jsdom.JSDOM('');
 global.document = dom.window.document;
 
-require('dotenv').config({ path: path.resolve(__dirname, '../../.env') });
-
 const vm = require('vm');
 
 const puppeteer = require('puppeteer');
@@ -40,7 +38,7 @@ const ChallengeTitles = require('./utils/challengeTitles');
 const { challengeSchemaValidator } = require('../schema/challengeSchema');
 const { challengeTypes } = require('../../client/utils/challengeTypes');
 
-const { supportedLangs } = require('../utils');
+const { testedLangs } = require('../utils');
 
 const {
   buildDOMChallenge,
@@ -88,13 +86,7 @@ async function runTests() {
     throw new Error(`unhandledRejection: ${err.name}, ${err.message}`);
   });
 
-  let testLangs = [...supportedLangs];
-  if (process.env.TEST_CHALLENGES_FOR_LANGS) {
-    const filterLangs = process.env.TEST_CHALLENGES_FOR_LANGS.split(',').map(
-      lang => lang.trim().toLowerCase()
-    );
-    testLangs = testLangs.filter(lang => filterLangs.includes(lang));
-  }
+  const testLangs = testedLangs();
 
   const challenges = await Promise.all(
     testLangs.map(lang => getChallenges(lang))
diff --git a/curriculum/tools/.markdownlintrc.js b/curriculum/tools/.markdownlintrc.js
new file mode 100644
index 0000000000..25ea060e88
--- /dev/null
+++ b/curriculum/tools/.markdownlintrc.js
@@ -0,0 +1,11 @@
+// JS rather than JSON so comments can be included
+
+module.exports = {
+  "default": true,  // include all rules, with exceptions below
+  "MD002": false,   // first heading should not be a top level heading
+  "MD013": false,   // lines can be any length
+  "MD022": false,   // headings don't need surrounding by newlines
+  "MD031": true,    // fenced blocks do need surrounding by newlines
+  "MD033": false,   // inline html is required
+  "whitespace": false  // extra whitespace is ignored, so we don't enforce it.
+}
diff --git a/curriculum/tools/markdown-yaml.js b/curriculum/tools/markdown-yaml.js
new file mode 100644
index 0000000000..d8fc7d2eb8
--- /dev/null
+++ b/curriculum/tools/markdown-yaml.js
@@ -0,0 +1,24 @@
+const yaml = require('js-yaml');
+
+module.exports = {
+  names: ['yaml-linter'],
+  description: 'YAML code blocks must be valid',
+  tags: ['yaml'],
+  function: function rule(params, onError) {
+    params.tokens
+      .filter(param => param.type === 'fence')
+      .filter(param => param.info === 'yml' || param.info === 'yaml')
+      // TODO since the parser only looks for yml, should we reject yaml blocks?
+      .forEach(codeBlock => {
+        try {
+          yaml.safeLoad(codeBlock.content);
+        } catch (e) {
+          onError({
+            lineNumber: codeBlock.lineNumber,
+            detail: e.message,
+            context: codeBlock.line
+          });
+        }
+      });
+  }
+};
diff --git a/curriculum/utils.js b/curriculum/utils.js
index d8b52ff8ae..e19395c6e4 100644
--- a/curriculum/utils.js
+++ b/curriculum/utils.js
@@ -1,3 +1,6 @@
+const path = require('path');
+require('dotenv').config({ path: path.resolve(__dirname, '../.env') });
+
 exports.dasherize = function dasherize(name) {
   return ('' + name)
     .toLowerCase()
@@ -15,4 +18,15 @@ const supportedLangs = [
   'spanish'
 ];
 
+exports.testedLangs = function testedLangs() {
+  if (process.env.TEST_CHALLENGES_FOR_LANGS) {
+    const filterLangs = process.env.TEST_CHALLENGES_FOR_LANGS.split(',').map(
+      lang => lang.trim().toLowerCase()
+    );
+    return supportedLangs.filter(lang => filterLangs.includes(lang));
+  } else {
+    return [...supportedLangs];
+  }
+};
+
 exports.supportedLangs = supportedLangs;
diff --git a/package-lock.json b/package-lock.json
index 3de85e94a2..57c7984213 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1734,9 +1734,9 @@
       }
     },
     "@types/babel__traverse": {
-      "version": "7.0.6",
-      "resolved": "https://registry.npmjs.org/@types/babel__traverse/-/babel__traverse-7.0.6.tgz",
-      "integrity": "sha512-XYVgHF2sQ0YblLRMLNPB3CkFMewzFmlDsH/TneZFHUXDlABQgh88uOxuez7ZcXxayLFrqLwtDH1t+FmlFwNZxw==",
+      "version": "7.0.7",
+      "resolved": "https://registry.npmjs.org/@types/babel__traverse/-/babel__traverse-7.0.7.tgz",
+      "integrity": "sha512-CeBpmX1J8kWLcDEnI3Cl2Eo6RfbGvzUctA+CjZUhOKDFbLfcr7fc4usEqLNWetrlJd7RhAkyYe2czXop4fICpw==",
       "dev": true,
       "requires": {
         "@babel/types": "^7.3.0"
@@ -3267,6 +3267,12 @@
       "integrity": "sha1-JJXduvbrh0q7Dhvp3yLS5aVEMmw=",
       "dev": true
     },
+    "deep-extend": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.5.1.tgz",
+      "integrity": "sha512-N8vBdOa+DF7zkRrDCsaOXoCs/E2fJfx9B9MrKnnSiHNh4ws7eSys6YQE4KvT1cecKmOASYQBhbKjeuDD9lT81w==",
+      "dev": true
+    },
     "deep-is": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
@@ -3535,6 +3541,12 @@
         "once": "^1.4.0"
       }
     },
+    "entities": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-1.1.2.tgz",
+      "integrity": "sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==",
+      "dev": true
+    },
     "err-code": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/err-code/-/err-code-1.1.2.tgz",
@@ -5456,6 +5468,12 @@
       "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=",
       "dev": true
     },
+    "graceful-readlink": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
+      "integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=",
+      "dev": true
+    },
     "gray-matter": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/gray-matter/-/gray-matter-4.0.2.tgz",
@@ -6738,9 +6756,9 @@
       "dev": true
     },
     "jest-haste-map": {
-      "version": "24.8.0",
-      "resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-24.8.0.tgz",
-      "integrity": "sha512-ZBPRGHdPt1rHajWelXdqygIDpJx8u3xOoLyUBWRW28r3tagrgoepPrzAozW7kW9HrQfhvmiv1tncsxqHJO1onQ==",
+      "version": "24.8.1",
+      "resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-24.8.1.tgz",
+      "integrity": "sha512-SwaxMGVdAZk3ernAx2Uv2sorA7jm3Kx+lR0grp6rMmnY06Kn/urtKx1LPN2mGTea4fCT38impYT28FfcLUhX0g==",
       "dev": true,
       "requires": {
         "@jest/types": "^24.8.0",
@@ -7393,6 +7411,15 @@
         }
       }
     },
+    "linkify-it": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.1.0.tgz",
+      "integrity": "sha512-4REs8/062kV2DSHxNfq5183zrqXMl7WP0WzABH9IeJI+NLm429FgE1PDecltYfnOoFDFlZGh2T8PfZn0r+GTRg==",
+      "dev": true,
+      "requires": {
+        "uc.micro": "^1.0.1"
+      }
+    },
     "lint-staged": {
       "version": "8.1.5",
       "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-8.1.5.tgz",
@@ -7638,6 +7665,18 @@
       "integrity": "sha1-4j8/nE+Pvd6HJSnBBxhXoIblzO8=",
       "dev": true
     },
+    "lodash.differencewith": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/lodash.differencewith/-/lodash.differencewith-4.5.0.tgz",
+      "integrity": "sha1-uvr7yRi1UVTheRdqALsK76rIVLc=",
+      "dev": true
+    },
+    "lodash.flatten": {
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/lodash.flatten/-/lodash.flatten-4.4.0.tgz",
+      "integrity": "sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8=",
+      "dev": true
+    },
     "lodash.get": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
@@ -7835,6 +7874,63 @@
         "object-visit": "^1.0.0"
       }
     },
+    "markdown-it": {
+      "version": "8.4.2",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-8.4.2.tgz",
+      "integrity": "sha512-GcRz3AWTqSUphY3vsUqQSFMbgR38a4Lh3GWlHRh/7MRwz8mcu9n2IO7HOh+bXHrR9kOPDl5RNCaEsrneb+xhHQ==",
+      "dev": true,
+      "requires": {
+        "argparse": "^1.0.7",
+        "entities": "~1.1.1",
+        "linkify-it": "^2.0.0",
+        "mdurl": "^1.0.1",
+        "uc.micro": "^1.0.5"
+      }
+    },
+    "markdownlint": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/markdownlint/-/markdownlint-0.12.0.tgz",
+      "integrity": "sha512-bjur6ZP0yKHVYh1U5+xD+bVkouKiUyiVzg9c9qkytYRW2nDfSowifKSmpPeO0uZHxzZOYMcV2Oe7sycPOEqMOQ==",
+      "dev": true,
+      "requires": {
+        "markdown-it": "8.4.2"
+      }
+    },
+    "markdownlint-cli": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/markdownlint-cli/-/markdownlint-cli-0.14.1.tgz",
+      "integrity": "sha512-bHueUEp1NmSFPWvOk3SNWhRRAInrdvmuzlkMrZJptUF6jNXJ32OhPXicRw2xg43+NLiUI01V5sc1VIrRWLKgig==",
+      "dev": true,
+      "requires": {
+        "commander": "~2.9.0",
+        "deep-extend": "~0.5.1",
+        "get-stdin": "~5.0.1",
+        "glob": "~7.1.2",
+        "js-yaml": "~3.13.0",
+        "lodash.differencewith": "~4.5.0",
+        "lodash.flatten": "~4.4.0",
+        "markdownlint": "~0.12.0",
+        "minimatch": "~3.0.4",
+        "rc": "~1.2.7"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.9.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
+          "integrity": "sha1-nJkJQXbhIkDLItbFFGCYQA/g99Q=",
+          "dev": true,
+          "requires": {
+            "graceful-readlink": ">= 1.0.0"
+          }
+        },
+        "get-stdin": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-5.0.1.tgz",
+          "integrity": "sha1-Ei4WFZHiH/TFJTAwVpPyDmOTo5g=",
+          "dev": true
+        }
+      }
+    },
     "matcher": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/matcher/-/matcher-1.1.1.tgz",
@@ -7844,6 +7940,12 @@
         "escape-string-regexp": "^1.0.4"
       }
     },
+    "mdurl": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/mdurl/-/mdurl-1.0.1.tgz",
+      "integrity": "sha1-/oWy7HWlkDfyrf7BAP1sYBdhFS4=",
+      "dev": true
+    },
     "mem": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/mem/-/mem-4.3.0.tgz",
@@ -9290,6 +9392,32 @@
       "integrity": "sha1-Q2CxfGETatOAeDl/8RQW4Ybc+7g=",
       "dev": true
     },
+    "rc": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
+      "integrity": "sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==",
+      "dev": true,
+      "requires": {
+        "deep-extend": "^0.6.0",
+        "ini": "~1.3.0",
+        "minimist": "^1.2.0",
+        "strip-json-comments": "~2.0.1"
+      },
+      "dependencies": {
+        "deep-extend": {
+          "version": "0.6.0",
+          "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+          "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
+          "dev": true
+        },
+        "minimist": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
+          "dev": true
+        }
+      }
+    },
     "react-is": {
       "version": "16.8.6",
       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.8.6.tgz",
@@ -10398,9 +10526,9 @@
       "dev": true
     },
     "symbol-tree": {
-      "version": "3.2.2",
-      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.2.tgz",
-      "integrity": "sha1-rifbOPZgp64uHDt9G8KQgZuFGeY=",
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
+      "integrity": "sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw==",
       "dev": true
     },
     "synchronous-promise": {
@@ -10794,6 +10922,12 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "uc.micro": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.6.tgz",
+      "integrity": "sha512-8Y75pvTYkLJW2hWQHXxoqRgV7qb9B+9vFEtidML+7koHUFapnVJAZ6cKs+Qjz5Aw3aZWHMC6u0wJE3At+nSGwA==",
+      "dev": true
+    },
     "uglify-js": {
       "version": "3.4.9",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
diff --git a/package.json b/package.json
index 99cf0cb96d..fdd1691655 100644
--- a/package.json
+++ b/package.json
@@ -19,10 +19,12 @@
     "docker:test": "docker-compose -f docker-compose.tests.yml run --rm tests bash",
     "docker:test:init": "docker-compose -f docker-compose.tests.yml run -u root --rm tests bash change_volumes_owner.sh",
     "ensure-env": "cross-env DEBUG=fcc:* node ./tools/scripts/build/ensure-env.js",
-    "format": "npm run lint -- --fix",
+    "format": "npm run lint:js -- --fix",
     "hooks:install": "node node_modules/husky/husky.js install",
     "hooks:uninstall": "node node_modules/husky/husky.js uninstall",
-    "lint": "eslint .",
+    "lint": "npm-run-all -p lint:*",
+    "lint:challenges": "cd ./curriculum && npm run lint",
+    "lint:js": "eslint .",
     "postinstall": "npm run bootstrap",
     "seed": "npm-run-all -p seed:*",
     "seed:auth-user": "cross-env DEBUG=fcc:* node ./tools/scripts/seed/seedAuthUser",
@@ -53,9 +55,11 @@
     "gray-matter": "^4.0.2",
     "husky": "^1.3.1",
     "jest": "^24.8.0",
+    "js-yaml": "^3.13.0",
     "lerna": "^3.14.1",
     "lint-staged": "^8.1.5",
     "lodash": "^4.17.11",
+    "markdownlint-cli": "^0.14.1",
     "npm-run-all": "^4.1.5",
     "ora": "^3.2.0",
     "prettier": "^1.16.4",