I believe that this film came out in the 80's. A new kid comes into in a rough High School. Seems like nobody gets along until this kid motivates them to participate in a school performance. For some reason the parents and faculty are against it. There seems to be only one teacher who cares. The kids are able to perform but the one new kid is hiding in the streets and when the other kids goes looking for him he has completely disappeared and is no where to be found. Please help, Thanks.