Descending from a long line of teachers, (Gran was a head, Dad was a deputy, aunt a year head & little brother on the management team at his school) one has to be a bit careful on what is said.
I am a Governor (vice chair as it happens) at a local school and I know how hard the staff & team work but that doesn't mean that they can just spit their dummies because they don't get their own way.
I'm against strikes - teachers seem to be constantly complaining about this & that - bottom line is if you don't like the long holidays, don't want a nice pension at the end of your working life (i accept that its part contributed by them) then come and work in the private sector - 25 days holiday a year & your own private pension to sort.