Do Teachers Need Advanced Degrees?

 Probably not. There is some benefit in the hard sciences for high school students. Little else.

 Ladd and Sorensen’s seminal 2015 paper on this topic used administrative data from North Carolina to assess the effects of teachers earnings Master’s degrees with fixed effects for teachers, students, and schools. With these fixed effects, it’s possible to estimate the effect of Master’s degrees after accounting for things that are constant among these groups. Thus, the question from this study is less ‘Do teachers’ Master’s degrees correlate with their success?’ and closer to ‘Does being conferred a Master’s degree make teachers more successful?’ The answer is a resounding ‘no’, with the only effect being on rates of high absenteeism among the kids, for some reason.