One piece swimsuit for school (girls only)

I have swimming class with school and I would like to know how others do. :P

How old are you?
Do you wear your one-piece swimsuit under your clothes before swimming class?
If you wear your one-piece swimsuit under your clothes, when did you thread it? (the evening before, first thing in the morning, before leave home...)
If you wear your swimsuit the evening before, do you like sleep with?
Do you keep your swimsuit after swimming class?
Do you wash your swimsuit on you in the shower or in the washing machine? (or never wash it)
Do you like to wear your one-piece swimsuit under clothes?
Do you enjoy the people to see you have a swimsuit under your clothes at school?
Did you ever wear your one-piece swimsuit like underwer when you don't have swimming?

(sorry for my English, Im French :S)