Well no, being paid good money for good hours doesn’t automatically mean people would lining up for a job. There’s plenty of good paying jobs that people don’t want to do.I'd love to get into the nuances of how many contact hours teachers put in compared to the average full time worker but 99 Problems has gone into it pretty well above so not going to repeat what he's said, but even teachers on 85k for the amount of work they're doing are substantially underpaid. Otherwise as 99 Problems pointed out, if you're correct that they're paid a good wage for good hours and have it easy, there'd be a surplus of teachers not a massive shortage.
85k is not a miserable wage, minimum wage (42k) would be a miserable wage.