For many teachers, in states where it's possible, the best way to get a quick raise is to resign from the union. The union looks out for, in this order, the interests of the union, the interests of the teachers, and the interest of the students. I live in a right to work state and do not need to belong to or pay any money to a union in order to teach. This is not to say union teachers are bad - they do care about education and sincerely believe the union is needed. I respect their voluntary choice to belong and participate. If the unions cannot compel dues, they won't wither away, but they will be much weakened.