The 50-State Comparison on teacher employment contract policies provides a national comparison of teacher employment contract policies in all states. All of the information was gathered from and focused on state statutes and regulations. State case law was also utilized for metrics related to collective bargaining. Data collection focused specifically on policy that addresses teacher employment contracts. This metric captures provisions in state policy that would require a teacher with previously earned nonprobationary status to return to probationary status as a disciplinary or improvement measure. Some states require teachers who have received multiple poor evaluations to return to probationary status. This does not include a return to probationary status in cases where a teacher leaves a school or district. [View the full "50-State Comparison: Teacher Employment Contract Policies" here: https://www.ecs.org/50-state-comparison-teacher-employment-contract-policies.]