text: When students have a closer similarity (their extracurricular activity) it can give them something in common. Having something in common helps people socialize and discuss that topic. Then, children can make friends over things they both like to do and discuss, plus they'll be able to work together on the topic. If the topic they made friends over was a sport, they can become better friends because teammates have to rely on each other during games. Having a sport as an extracurricular activity also gets kids exercising and it's not always a bad thing.