School bus sizes are stated in terms of passenger capacity for elementary students. It is assumed that elementary school students will ride three per seat. Middle school students are assumed to ride two to three per seat. High school students are assumed to ride two per seat. If the bus has three elementary school students, two to three middle school students, or two high school students in each seat, it will seem crowded but it will not be over capacity. It is our goal to fully utilize all the space on all the buses in our fleet.