Most regional schools, as they get larger and larger, will have a student body that reflects the regional population fairly well. Three of these schools were pr

Most regional schools, as they get larger and larger, will have a student body that reflects the regional population fairly well. Three of these schools were private though, and small private schools especially can have idiosyncratic student populations. Apart from that, it's hard to say more without knowing which schools these were. (A regional school is one that draws students mostly from the surrounding region instead of nationally/globally)