THE GROWTH AND IMPACT OF TEACHERS UNIONS IN STATES WITH COLLECTIVE-BARGAINING LEGISLATION

This paper examines teachers' union activity in large school districts in the eleven states without collective bargaining legislation. A sup ply and demand model of municipal labor markets was used to specify re duced form wage, employment, and expenditure equations. These equation s were then estimated using ordinary least squares regression analysis to determine the impact of teachers' collective bargaining. The prese nce of a collective bargaining agreement had a statistically significa nt effect on wages and district expenditures. Average teachers' salary in districts with collective bargaining agreements was 9.5% higher th an average salary in districts without collective bargaining agreement s. Similarly, average school district expenditure was 15.6% higher in districts with collective bargaining agreements.