One thing I've seen multiple times...
Generally speaking (meaning there are exceptions), the bigger, wealthier the school and the closer to suburbs/big cities, the better the reffing. The further away from those areas and the smaller the schools, the worse the reffing.
TBF, I don't expect the same from HS/Jr High refs that I do from college/pro refs. But not everyone can say that with honesty. As long as they are somewhat consistent and call the major things properly, while missing a questionable travel or foul, I'm good.
Also, I can't tell you the number of times I've tried explaining to other fans what a travel is, a reach is, that over the back isn't and basic rules that people tend to yell (incorrectly) at refs about.