I auditioned about 8 years ago and here's what went down...
1) The PA was busted so I couldn't play any of the playalong pieces I had rehearsed. I had to think on my feet and asked the piano player to jam on a blues thing and then a funk thing.
2) I brought along a bunch of transcriptions to show my drum theory was up to par and I could both read and write drum notation.
3) One of the examiners picked up a frame drum and played a bunch of patterns that I had to repeat back.
4) They asked me to sing, I opened my mouth and everyone in the room burst out laughing.
5) We talked a bit about my background, goals and stuff like that.
The audition went great and they gave me a scholarship which was very cool. I think I succeeded because I approached it like I would approach a gig. Make friends with the people in the room, put them at ease and then go to work. They're musicians just like you and me and share the same passion.
Be prepared for any and all eventualities. If you are musical drummer, no matter what goes down you will do fine because you will adapt to whatever happens and whatever is thrown at you - just like it is in the real world.
I live in ireland, and i don't want to travel all the way to boston for nothing, the trip alone will cost a lot!
Hey Bosophorus, you might want to check their international auditions. They come to Europe - I auditioned in Dublin. It will save you a big wack of money.