One: Congrats.
Two: How could we possibly know how YOUR school/director runs callbacks. Why don't you ask someone AT your high school, they'd be able to tell you rather than conjecture.
At my callbacks the students learn a song from the show (all the same song, with different key options) and then read assigned scenes w/assigned partners.
We are not a big "dance" school, but some schools will also have you learn choreo. I would expect you will be there for some time.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.