Public Sector Union Density. Each year the Bureau of Labor Statistics provides the nation with overall union membership statistics and each year unionstats.com breaks down the figures as much as possible so we can examine the unionization rates in various sectors of the economy.
The picture for teachers’ unions was a little brighter in the 2015 sample. Of the 4,678,590 people employed as elementary, secondary and special education teachers in the United States (both public and private), 2,358,132 were union members (50.4%). The unionization rates for pre-k, kindergarten and higher education were much lower, but that has always been the case.