Cumulative Impact of Teacher Effectiveness

Student test scores (5th grade math) by effectiveness level of teachers during a three-year period for two metropolitan Tennessee school systems.

High, High, High: Teacher sequence at school system #1 is 83 and 96 at school system #2.

Average, Average, High: Teacher sequence at school system #1 is 70 and 92 at school system #2.

Average, Average, Average: Teacher sequence at school system #1 is 50 and 80 at school system #2.

Average, Average, Low: Teacher sequence at school system #1 is 39 and 61 at school system #2.

Low, Low, High: Teacher sequence at school system #1 is 60 and 83 at school system #2.

Low, Low, Average: Teacher sequence at school system #1 is 40 and 63 at school system #2.

Low, Low, Low: Teacher sequence at school system #1 is 29 and 44 at school system #2.

Source is Sanders and Rivers (1996), Cumulative and Residual Effects of Teachers on Student Achievement. Universidty of Tennessee Value-Added research and Assessment Center, as quoted in National Council for Accreditation of teacher Education's (NCATE) Summary data on Teacher effectiveness, Teacher Quality and Teacher Qualifications, 1977-2002.