Corrected entry: To allow for the children to be at eye level when they speak to him, when Arnold is brought out on the stretcher, the ambulance attendants roll him with it in the down position. You can see at the end of the scene they actually raise him up to put him the ambulance to cover up the manoeuvre when in fact they should have left him lowered to lift him in.
Corrected entry: Right at the end when Arnold is on the stretcher going into the ambulance, the EMS crew does a strange thing. They are rolling the stretcher with Arnold in the down position, then when they get to the ambulance, they raise it up. This is the opposite of the way it is normally done. Plus, with that model of stretcher, you have to lower the patient and then lift him bodily into the back of the ambulance. In the scene immediately after they raise it, they are seen sliding the stretcher into the ambulance after is has been put back into the down position. If you watch closely, you can see that the medics look confused when they raise the stretcher and it won't go into the ambulance. Clearly they rolled it in the down position so the kids could talk to him.
Corrected entry: The urinals in the elementary school bathroom are too tall for kids to go to, the bathroom scenes were not shot in an elementary school bathroom