I taught at one of the larger aviation university’s and also a small mom and pop school at larger class C airport. I flew 4 times as much per month (150 hours last July) at the smaller school due to the instructor student ratio and the fact that the university used Frasca sims to no end cutting into flight time.
I would search around busier airports and make calls to all the schools in that area.
Ask about how many students they have, how many instructors, types of AC flown, and maintenance just to start.