answer:I assume we are talking k-12 and not college level. I think job burn out can happen in any career. I think most bad teachers weren’t great teachers to begin with. Tenure probably doesn’t make them bad teachers, it just makes it harder to get rid of them. Probably for some tenure decreases their drive to progress with the times or to stay at their tip top. If they get classroom after classroom of annoying disobedient students, then I would think yes that has a negative affect on their desire to perform well. I think most teachers care about their students and about teaching.