[kaptain]

This practice is very common among immigrant/non-Western communities. Oftentimes an educational institution with a religious background offers the highest quality and most prestigious education. In addition, while they might not have the same religious views as the institution, these parents often value the conservative social values that these institutions espouse.

[Timpy]

Where I'm from the catholic churches offer the most prestigious high school educations because their cost is similar to college. They in no way offer a better education, it's just a paywall to keep your kids surrounded by like-minded society.

[MisterBastahrd]

All you have to do to determine whether a school is there for the purposes of educating young people or acting as a buffer against desegregation is to compare the racial composition of the school's football and basketball teams versus the racial composition of the school's general population.