Also, in my school system, the good teachers are steered/yanked towards the classes that have standardized testing. So electives, classes for enrichment, etc.,

Also, in my school system, the good teachers are steered/yanked towards the classes that have standardized testing. So electives, classes for enrichment, etc., don't necessarily have the best teachers. If all of the teachers in a given school are "good", that's not an issue. In schools where teachers are in short supply, that's a major problem.