Social Class On A Bus

A couple of days ago I took my high school's shuttle bus to get to it's other campus. We usually have a specific group of buses and drivers for campus transportation, but this time, it was a bus from a Chicago Public School. I will not disclose the name of the school, but note that the bus was very different from my school's bus from the Northshore suburbs. Before getting onto the bus, I immediately saw a sign that said "This is a crime and drug free bus". I had never seen a sign like that on any of my high school's shuttle buses before. When I got onto the bus, I noticed that there were at least 3 security cameras. The bus driver also yelled throughout the bus, "I don't care if you guys have 3 to a seat; you can do whatever!"

Just the difference in the buses show that the experience at school is different for a student in the Northshore and in Chicago. Having the sign on that bus shows that they need to remind students of what a school bus should not have. Having a security camera on a school bus is not typically strange, but having three shows that there is a safety issue on the CPS buses. Again, there is a sense of carelessness, when that driver told students to risk their safety by breaking the bus rules, when New Trier's bus drivers are pretty strict. Even the way New Trier calls it a shuttle bus, and CPS schools call it a school bus shows a difference in social class. New Trier's buses aren't even shuttle buses, but we call them that anyway. Why is that? 

What social class do you think an average student would be in if they rode in the "shuttle bus" and the "school bus"? Also think about the stereotypes that downtown city schools have compared to suburban schools. More importantly, where have these stereotypes come from? Some people believe that you can tell what social class a person is by their dialect, what they have, and their possessions. Do you agree or disagree with this statement? Why?