WSJ Editorial on Alternative Certification

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. Harvard researchers Paul Peterson and Daniel Nadler compared states that have genuine alternative certification with those that have it in name only. And they found that between 2003 and 2007 students in states with a real alternative pathway to teaching gained more on the National Assessment of Educational Progress (a federal standardized test) than did students in other states.