Brad DeLong peers back into his archives to find a years-old post with the simple title "Pay Teachers More Money" because, after all, "the best and quickest way to make teaching a more attractive profession is to pay teachers more." I agree. That said, there are also a lot of weird barriers to entry into the teaching profession -- formalistic requirements centered around getting degrees from education schools -- that have little relationship to effectiveness in the classroom. It's one thing to have basically pointless credential-based barriers to entry into a lucrative field (the third year of law school, etc.) but it's a very harmful bottleneck for something like teaching.
Matthew Yglesias is a former writer and editor at The Atlantic.