Teachers across the United States have been increasingly using collective bargaining to negotiate their contracts since 1962. This has led to a significant impact on education, with a majority of teachers now working under these agreements. Teachers unions have seen a surge in membership and financial resources, with over $500 million available annually. As a result, the terms and conditions of teacher employment have been greatly influenced by collective bargaining. This shift has affected virtually every aspect of education, as a large portion of school budgets goes towards personnel costs.