And you don't think teachers haven't put in the same amount of hours? Really?Its certainly tough, but that still doesn't constitute being taken advantage of. In order to "take advantage" of someone, you either exploit a mistake they made (like taking an underpaid overworked job) or to make excessive use of. I've put in 14 hour days in my office, THAT is excessive.
5 -10 Additional students is a headache. I know many teachers, and I understand such a dilemma, especially when teacher merit is a consideration. But its not being "taken advantage of."
I certainly think it's taking advantage - when you tie evaluation to failing circumstances it puts the teacher's job at risk.