States, districts, and schools all across the United States are busy developing or implementing teacher evaluation systems. One can trace this flurry of activity to a variety of reports and initiatives that highlight two failings of past efforts: (1) Teacher evaluation systems have not accurately measured teacher quality because they've failed to…

Effective principals are those who boost academic achievement for all students, increase the effectiveness of their teaching staffs, and consistently take leadership actions shown to improve outcomes for students. Therefore principal evaluation systems should place 70% of their weight on the ability of principals to increase student achievement…

The National Staff Development Council (NSDC), a private, nonprofit association, has outlined high standards for educator professional learning. One demonstration of NSDC's commitment to the goal of ensuring all schools support and use high standards for professional learning is the organization's investment in developing an instrument to assess…