WOW an educator who refuses to be educated. She should be ashamed of her self for not wanting to learn how to do things properly. I'm thinking you should call her boss and let them know that your upset that daughter's principle is refusing to LEARN how to do things correctly.
I'd type more but I don't want to get worked up anymore.
Isn't that the way of most folks in "positions of authority" anymore though? Whether they be teachers, doctors, politicians, whatever the case may be. They get some education under their belts, get a position of at least some authority because of their "job" and then take on the attitude that they are above reproach.
As for the size of the pedal, I know that in some of my older trucks, there was a sort of dead pedal there from the factory that were smaller like that and as a result, my foot would slip off at times. But especially considering that I wear boots most of the time, I would want the pedal to be wide enough to truly be secure and stable considering that the soles of boots are normally harder and less forgiving than sneakers, etc.