Gagan Dharwal

Teaching experience is positively associated with student achievement gains throughout a teacherâ??s career. Gains in teacher effectiveness associated with experience are steepest in teachersâ?? initial years, but continue to be significant as teachers reach the second, and often third, decades of their careers.
As teachers gain experience, their students not only learn more, as measured by standardized tests, they are also more likely to do better on other measures of success, such as school attendance.
Teachersâ?? effectiveness increases at a greater rate when they teach in a supportive and collegial working environment, and when they accumulate experience in the same grade level, subject, or district.
More-experienced teachers support greater student learning for their colleagues and their school, as well as for their own students.