A good reporter should be able to cultivate credible sources of information. Find yourself a local police station, introduce yourself as a high school news reporter and conduct some interviews.

What you will probably learn is that the police aren't going to ticket school bus drivers for doing that and it wouldn't even matter unless a school bus is involved in an accident after sliding through the stop sign. Even then it wouldn't matter if there was no traffic ticket because the law of negligence would apply.