Watch the film of the last time the World's biggest lesson was set in 2003.

Watch world's biggest lesson video

At 9am* on 23rd April 2008 thousands of schools in over 120 countries taught the same lesson at the same time. The aim is to make it the world's biggest lesson, EVER.

The lesson was about why school is so important and we hope that decision makers learnt as much from it as you!

We're now just waiting to hear whether we've been successful in breaking the record - so watch this space!

Send in photos and stories of your event to sendmyfriend@comicrelief.com

* You also have an option to do the lesson at 4pm if you want. Because the lesson took place all around the world it had to happen at three different times so that everyone could find a time that suited them, depending on the time zone they live in.

What happened on the day?What happened on the day?

Westminster event - read the press release

Newsround report of the Westminster World's Biggest Lesson

Events around the world - find out more

Stories from schools across the UK will be featured on the Your Stories pages shortly - watch this space!

Downloads and resources for taking partDownloads and resources for taking part

WORLD'S BIGGEST LESSON RESOURCES

THE RULES FOR TAKING PART

Please follow this plan for the GCE World’s Biggest Lesson on 23rd April 2008.

So that your lesson counts towards the Guinness World Record it is important that:

  1. The lesson lasts for 30 minutes (minimum)
  2. The lesson takes place on 23rd April 2008 at one of the official World Record Attempt times: 9am or 4pm.
  3. Each class or group taking part in the lesson has a representative who teaches the lesson and returns the registration form. This can be a teacher or it can be a young person/group of young people.
  4. The lesson plan is followed, including the quiz.
  5. Those learning do not have a vast prior knowledge of what they will learn.
  6. You send the signed Authentication Form off after the lesson. This can be faxed, scanned and e-mailed, or posted.