Guys - I hate to break it to you, but enrollment has ZERO to do with Dowling's dominance. Dowling has one of the smallest enrollments in Class 4A sports. Schools like Lincoln, Iowa City West, and Valley have double the enrollments of Dowling. Hick towns Muscatine and Marshalltown even have higher enrollments than Dowling. Heck, Dowling doesn't even have their own stadium, and have to rent neighboring venues.
The fact is, Dowling hires the best coaches and has a much higher participation rate for their students. Kids that go to Dowling, on average, are significantly more disciplined and dedicated than other schools, like comparing the Stanford student body with Florida State's.
Knowing quite a few Dowling grads I hate to break it to you but, this is not the case.