My experience- teachers make the worst students! There is always a small group sitting in the back, talking, doodling and making faces... I'm usually sitting there ;-)

My teaching credential and administrative ed classes were all focused on getting units and passing time. There was relatively little educational value in the classes. I often brought books to class to read on my own while someone was giving some presentation on who knows what. I once had a prof who hadn't been in a high school classroom in 36 years (he was no less than 80 years old!). He had never taught a class that wasn't segregated, had no idea about mixed genders and thought special students needed institutions. Yeah... I paid for that....