Those months aren't "off", they're spent doing course prep, professional development, and other admin tasks. And during the school term, teachers spend at least a couple of unpaid hours a day on marking and lesson prep. And their contact time is spent wrangling a large group of immature psychopaths who don't want to be there.

It's not as tough as some teachers make out but it's nowhere near as cruisy as it looks from the outside, either.