You might want to learn more about bus design and seatbelts before condemning the lack of presence on a bus. First, buses are designed differently than cars. The lower section - aka well below the passenger compartment - takes the brunt of the impact. Passengers, even school-aged children, are safer unbelted in a bus than in a car.
Second, in the case of an accident, seatbelts would tend to be more hazardous. Someone would have to get all the children out; and there's a strong likelihood of tripping over unreeled seatbelts.
Several phases of motor vehicle accidents, you have a primary impact, stationary or not, then you have a secondary impact, bodies striking something, seatbacks, roofs, glass windows, steering wheels, rear view mirrors. Then you can have a third impact...flying objects, backpacks, football equipment, band equipment. I know school buses, in fact early in my career I have actually cut the top off of one, it was a drill. There is as much information out there indicating that seatbelts would be helpful on school buses, just like the information that tries to debunk the theory. I'm concerened about the secondary inpacts, the impacts that throw little bodies across the cabin of a bus. You see this on the news everyday. I'm now an ER nurse but while in school I was an EMT, we were trained to look for scene dangers, tripping over seatbelts.....yes I suppose it could happen but certainly not something that would keep belts from buses. Getting stuck in a seatbelt.....thats whay I have a leatherman, "it cuts seatbelts" I hope your not one of those that have a friend of a friend that said after an accident that if he HAD his seatbelt on it would have killed him are you?
There have been studies about seatbelts on buses, there have been legislation attempting to mandate it.......the fact of the matter is, schools cannot afford to buy books, cannot pay teachers. Retro fitting buses with seatbelts would be very very costly.



some children...or my child would like assistance during an emergency landing in water, in which I would lower, throw, pitch, roll, glide her out an exit, window exit, door, broken window...or in the event that i'm really uncertain if we are going to make it, I might try to make an opening.......My point is
if i'm not supervising my children and sitting in another part of the plane, I cannot assist with this
At least they are not sitting by you, right? 

Ironically I figure the reason I have not heard back from him is that he is in London now--going over some mroe research.
Nor can I imagine the incopetence of a society that prohibited all of these types of increasing responsibility until one magic age and then expected the 18 year old to suddenly know how to cope with it all having never coped alone with any of it until that day.