Like all unions, teachers unions have a vested interest in restricting the labor supply to reduce job competition. Traditional state certification rules help to limit the supply of "certified" teachers. But a new study suggests that such requirements also hinder student learning.
Unions claim that traditional certification serves the interests of students. But it's clear that students would be better served if the teaching profession were open to more college graduates. Teachers learn by teaching, not by mastering the required "education" courses associated with state certification.
Far from regulating teacher quality, forcing prospective teachers to take a specific set of education-related courses merely deters college graduates who might otherwise consider teaching. That outcome may serve the goals of labor unions, but it's hard to see how it helps the kids. If we want better teachers and more of them, relaxing certification standards would be a good place to start.