In a suburb of Chicago, two 11-year-old twin boys wanted to see if they could set a Guinness World Record. Pogo stick jumping? Loudest burp? Instead of having to do something, the boys just have to prove how many twins are enrolled in their grade at school. It turns out that there are 24 sets of twins in the fifh grade. In the picture by Scott Eisen below, you'll see all the twins in Highcrest Middle School. Most of the twins are fraternal. Two sets of the twins were even born on different days. The previous record is 16 sets of twins in a grade at one school.