I started calling myself a Uni student after I got into an internet argument with a retard Brit who said I was retarded for going to 'college' and not Uni.School means school. Could mean elementary, middle school, or high school. I don't usually see college or university students say school as often as the other ones though.
I guess some people think there's a difference. My hooyo would correct me when I said "I'm gonna go to college" and make me say university insteadI started calling myself a Uni student after I got into an internet argument with a retard Brit who said I was retarded for going to 'college' and not Uni.
Because the British are classist and like to distinguish class, while Americans are more egalitarian and don't nitpick on class.