quicky answering ur question: it is ok for u to do it and nobody will actually mind at school.

and personally i think u shld totally do it. there ain't much crazy things u can do in this country when u r in ur age so u can at least get ur ears pierced ;o)

even if someone wld be making u problems at school, u can always remove it for classes and put it back when u leave school.

u live only once, so don't let ppl put u up to their own standards!