If you are, pray that I never find out who you are: Schoolies is a week-long celebration (usually on the Gold Coast, but it can be anywhere) for people in Year 12 who have finally finishe dthirteen years' of schooling.
The mickey. Taking the piss. Ripping the shit out of something, man!
It's probably closest to Spring Break, though there's bigger questions at stake here. Like what the hell you're doing on these forums if you're in America.