For the record, I am a secondary school teacher, and as I teach in a very deprived area, would possibly be in favour of shorter holidays, as my students regress terribly in terms of skills and behaviour over the summer. I mentioned this upthread but was threatened with various deities, so disappeared for a while (scared of deities). I am also a FT working tax paying parent. I use childcare in the holidays to enable me to run holiday schools.
However, Five I am curious as to how you would manage controlled assessments under your flexible system. At the moment, if Pupil A is absent during her assessment (which has to be supervised over 2 or 3 lessons), we have to find time outside the curriculum to redo it. How would that work with multiple pupils coming and going?
How would it work in subjects like Drama and PE where exam marks are based on group work? Are you thinking of going back to an individual, exam only system? (genuine question, not snarky).
I must admit to feeling frustrated that only teachers seem to be given the responsibility for covering everyone's childcare, it's not within our power to do this. And I agree that employers at large might like to consider flexible working for parents, not just schools.
I am willing to consider change, but think that it would require a seismic change in terms of time tabling, curriculum and all the school staff it involves, not just teachers.