It varies significantly by state. Five states explicitly outlaw collective bargaining by teachers and 32 states require it with various limitations on the scope

It varies significantly by state. Five states explicitly outlaw collective bargaining by teachers and 32 states require it with various limitations on the scope of items that can be negotiated. Some states also have restrictions on striking. https://fordhaminstitute.org/national/research/how-strong-are-us-teacher-unions-state-state-comparison https://fordhaminstitute.org/national/research/how-strong-ar...