Quality teachers are the single greatest determinant of student achievement. Teacher education, ability, and experience account for more variation in student achievement than all other factors. Studies have found that 40 to 90 percent of the difference in student test scores can be attributed to teacher quality. Knowing the subject matter,…

Professional development practices in schools have been changing recently, particularly with the mandates regarding professional development through No Child Left Behind. In 2001, the National Staff Development Council revised its standards of professional development to shift thinking in this area and reflect the changing needs of schools,…