I haven't lived in Iowa in many years. Do different school districts that are in the same district or conference pay their coaches (head football coach) significantly different amounts? And does the support from the school district and community differ a lot between schools? I can remember growing up in Iowa when I was in elementary school and the high school basketball coach had a youth program and held camps. But he eventually left and the head basketball coach when I was in high school was much less active and only focused on the Varsity. He did not communicate, help or even watch the lower grades.
I think if a district pays more they will most likely get a better qualified coach. The community support is also helpful. But most important, in my opinion, is how active the head coach (football, basketball, baseball etc..) is in communicating expectations to lower level coaches and players, evaluating the younger players, and having the lower level coaches run a 'common system/playbook'. If the players have been running the same system/playbook for four or five years; by the time they are juniors and seniors it should be a well oiled machine/team.