It's pretty tough to go out and look for a band while being in High School... For me it was easy because I moved away to go to college and instantly found a ton of people to play with. If your school is a small school like my HS was... you're kind of out of luck. But stay with it... in the meantime try working on your solo act... so when you do find a couple people to play with you can expand your solo act pretty easily and incorporate their ideas. Check out the local musci shops like everyone has said.