I'm too young for a job, but I want to make some money!?

I'm going to a really nice, private high school starting next year, but the tuition is a lot. Not in a stuck up way or anything, but we are expecting a partial scholarship. I'm sure it's worth it; the school is beautiful! My parents are willing to pay the tuition, but I feel bad and want to help them out. Also, my best friend really wants to go there. I couldn't stand school without him! We've never NOT been in a class together. However, his family probably wouldn't be able to pay for the complete tuition. What are some ways to make money for 13 and 14 year olds? By the way, we could carpool there. We live about two minutes away from each other, so not too bad.