In what ways do teachers' unions campaign to give agency to students' families and career choice to in-demand faculty?
Seems like the incentives are mostly oriented around getting teachers to stay in one place and grind out another year of experience, round of continuing education, and extra degrees whether they are wise or not.
Otherwise, why don't teachers just quit schools with poor safety records, working conditions, pay, equipment funding, and uncompensated overtime? Because no district really has to worry about being held accountable like that.