diff --git a/curriculum/getChallenges.js b/curriculum/getChallenges.js
index 07acad80bd..8f1b411dad 100644
--- a/curriculum/getChallenges.js
+++ b/curriculum/getChallenges.js
@@ -128,6 +128,12 @@ async function createChallenge(fullPath, maybeMeta) {
   challenge.template = template;
   challenge.time = time;
 
+  // challenges can be hidden (so they do not appear in all environments e.g.
+  // production), SHOW_HIDDEN controls this.
+  if (process.env.SHOW_HIDDEN === 'true') {
+    challenge.isHidden = false;
+  }
+
   return challenge;
 }
 
diff --git a/sample.env b/sample.env
index c13e0f3e17..b3625a09a2 100644
--- a/sample.env
+++ b/sample.env
@@ -53,3 +53,6 @@ GHOST_CLIENT_KEY=123abc
 
 SENTRY_DSN=dsn_from_sentry_dashboard
 SENTRY_ENVIRONMENT='staging'
+
+# Set this to false to see what the production site will contain
+SHOW_HIDDEN=true