Different schools have different needs & will ask different questions.
Mostly they are more interested in why you choose their school & what can you contribute to the school as a parent volunteer. Go do some research on what is the school's current focus/needs.
They might also ask questions like "if you are a working woman, how are you going to find time to contribute as a parent volunteer".
Btw, based on your counter & some calculation, your girl is turning 5 next year? If yes, then you must work fast to get an interview for PV & start soon. If you girl is 5 this year, it's too late already.