Somebody on this Bus is Going to be Famous by J. B. Cheaney

If you ride a bus, you know that each kid has his own story and dreams. Some live in the subdivision, others down the road. Life on it is ruled by the bus driver who is either nice or evil. On this bus, she leaves the students a mystery -- why does she makes a stop at the end of a road where no one is waiting? That is not the only mystery. Doing a report, Miranda learns about a mystery involving the class of 1985, which is the grad class of some of their parents, but NO ONE WANTS to talk about. The only thing about these mysteries is that they will affect everyone's future, either positively or negatively. It takes a tragedy to finally be able to solve both. Are you just like one of the kids? To find that out and see who and how they become famous, read the book.