Strunk, Katharine O.; Reardon, Sean F. - In: Journal of Educational and Behavioral Statistics 35 (2010) 6, pp. 629-670
The literature on teachers' unions is relatively silent about the role of union strength in affecting important outcomes, due in large part to the difficulty in measuring union strength. In this article, we illustrate a method for obtaining valid, reliable, and replicable measures of union...