I feel sorry for you and, if what you are saying is correct, disgusted with the Head. I will hopefully be enrolling on a PGCE next academic year (Secondary History), partly because I don't want anything more to do with the corporate retailers that I work for at weekends to support myself through university. Retail management, I swear, are trained in emotional and psychological bullying. They might not call it that, but all of the middle managers that I've had use similar tactics to make you work more hours than your contract states, practically decieve customers into opening store card accounts, etc. I can't wait to leave them for the teaching proffession, I hope that you and I both stumble upon better superiors to work for.