Sixty-five years ago I recall my aunt (a maths teacher and a good one) defending unequal pay on the grounds that ‘men had families to support’- she never married. I think around that time, or maybe before the war, a female teacher had to resign if she married. These were deeply entrenched social attitudes and change is still ongoing but (among many other things) I’m sure it helps when pressure for change is persistent – eg always contacting conference organisers to regret being unable to submit a paper or to attend due to the lack of childcare facilities.