In 1992, a group of teachers, principals, and central-office administrators at a Wisconsin elementary school developed an effective differentiated teacher-supervision process. Teachers enjoy the flexibility of choosing among three options: a cooperative-clinical supervision group, a self-directed group, and a collegial professional-development…

The School Improvement Model launched by the Iowa State University College of Education in 1964 uses a total-system approach to measure and report teacher performance. SIM focuses on student achievement and emphasizes validity, reliability, discrimination, and 360-degree feedback from principals, other teachers, parents, and students. A Wyoming…