Teacher's unions are a weird beast as well, aren't unions supposed to be about about organising labour in the face of capital? But if schools are mainly run by the government then what is the labour-capital relationship here? Too often this just turns into mediocre ideological teachers making demands on tax payers with no real accountability.
I'm in Australia and the teachers here are already on excellent salaries but you'd never know it from the demands and entitlement they frequently show.
Education as a sector can't be disrupted quickly enough (and thankfully the internet is doing this and I expect by the end of the decade the new AI tools will have educational components that will outperform the average teacher).