I have a friend who was a teacher, and a bloody good one.
Unfortunately, because he was a good teacher the school gave him all the dross classes to teach, and, even though they lapped his classes up, it left him feeling really disillusioned because he felt he couldn't properly fulfil his talent. Had they mixed it up with higher set and lower set classes he might have stayed in the profession.
( Davros' Granddad a voice of calm reason in a world of spastics., Fri 4 Feb 2011, 20:40, Reply)