At my school there approx half of the female teachers with children have gone pt, there is one male teacher with children who is pt. He is thought of as a massive oddity, most other men don't even break stride when their partner has a baby. I am one of the ft female teachers with children and I am considered a bit of an oddity for not even requesting to go pt after ML. I don't even have huge plans for promotion but just love my job most of the time.
I do know a few couples where the woman is ft working and the man is a SAHD. It is seen as VERY unusual, whereas man working ft and woman SAHM is seen as the norm in the early years.