Different schools have different situations.
I instructed at a small mom and pop FBO and they charged $30 an hour and I got $12-$14.
Then I went to an academy type run by an airline and I got $15-$17.
In between those two jobs I freelanced and got $30-$40.
So it all depends, look carefully at the terms of employment you are offered and question what looks like B.S. to you.
Good luck.