The characters on the show are pretty stupid and on the surface do not portray a very positive image of teachers. But I realized today why I kept watching. This immature, insane group of teachers and administrators love their students and care more about their success than anything. In the last episode Mr. Robinson gives up a chance to tour with Earth, Wind and Fire because his kids needed him.
It was nice to see teachers and administrators working together and working over time with the only important thing being the welfare of the children in their charge.