Both, with slightly different meaning. In school usually means enrolled in the school program while at school usually means located at the school. Thus we say "I learned this in school" but "I left my homework at school."
Well personally I think that it would make sense for a child to start high school at the age of 12-13 yrs. I think this because if you are born in 1998 you should have graduated from primary yr 7 and...
Yes, you must still pay child support, even if you're enrolled in school. If your income is reduced, or if you have no income, you may petition the court to reduce the amount you are required to pay;...