Girls school..... this means a school for girls. Girls' school is the possessive and would imply that the girls owned the school.
Girls need education just as much as a boy. Also, it is to spite you! (and because women deserve as much a choise about their futures as guys)
Ask her during lunch or when you have freetime.
No, it is a high school in a grammar school area.
no not always No when a girl talks in school it is not always about school.