It's pretty easy to do. We accept kids who score in the top 2 percent on a standardized intelligence test.
That means 1 out of every 50 people qualifies for Mensa.
That's a lot when you think about it; probably quite a few kids in your school qualify and don't even know it!
So, talk to your parents about joining and get their permission first. They'll be able to help you figure out if you've already taken a test that will qualify you. Once you find a test, they can help you fill out the application and send it in. Here's the process: