That might be a good chunk of it, but what I was thinking about was the traffic lighting that is around the schools and how that is oriented. It becomes highly congested due to the time that it takes for people to get into cars, and the lines that form for people that are trying to get into the lots. This backs its self onto main corridors.
Busses would address this due to the density of students per square foot.
Busses would address this due to the density of students per square foot.