According to
Education Week (Aug. 30, 2010), "Education programs across 19 states are piloting a performance-based assessment for teacher-candidates that potentially could serve as a common prelicensing measure for new teachers. Based on a test in use in about 30 education schools in California, the Teacher Performance Assessment includes a “teaching event” requiring teachers to extensively document and submit for review artifacts of their planning, instruction, and ability to assess and respond to student needs...Five of the states taking part in the work—Massachusetts, Minnesota, Ohio, Tennessee, and Washington—have committed in legislation to use a performance-based licensing test, and officials have signed memoranda of understanding agreeing to adopt the assessment if it proves to be technically valid and reliable."
Additional states planning on participating include California, Colorado, Iowa, Illinois, Maryland, Michigan, Missouri, New York, New Jersey, North Carolina, South Carolina, Virginia, West Virginia, and Wisconsin.