Eunice Han: How Teachers’ Unions Raise Teacher Quality and Student Achievement

Diane Ravitch's blog

In this post, EduShyster interviews Eunice Han, an economist who earned her Ph.D. at Harvard University and is now headed for the University of Utah.

Dr. Han studied the effects of unions on teacher quality and student achievement and concluded that unionization is good for teachers and students alike.

This goes against the common myth that unions are bad, bad, bad.

Han says that “highly unionized districts actually fire more bad teachers.”

And more: It’s pretty simple, really. By demanding higher salaries for teachers, unions give school districts a strong incentive to dismiss ineffective teachers before they get tenure. Highly unionized districts dismiss more bad teachers because it costs more to keep them.

Dr. Han found a natural experiment in the states that abolished collective bargaining.

Indiana, Idaho, Tennessee and Wisconsin all changed their laws in 2010-2011, dramatically restricting the collective bargaining power of public school teachers. After that, I…

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