Identifying Effective Teachers Policy
The state should require that tenure decisions are based on evidence of teacher effectiveness.
Tennessee's probationary period for new teachers is five years. To earn tenure, probationary teachers must receive an overall performance effectiveness rating of above expectations or significantly above expectations during the last two years of the probationary period.
A tenured teacher who receives two consecutive overall ratings of below expectations or significantly below expectations may be reverted to probationary status until they receive two consecutive ratings of above expectations or significantly above expectations.
Because Tennessee's teacher evaluation ratings are centered primarily on evidence of student learning (see Goal 3-B), basing tenure decisions on these evaluation ratings ensures that classroom effectiveness is appropriately considered.
SB 1528 (2012)
Ensure that sufficient evidence is considered in tenure decisions.
To ensure that tenure decisions are based on sufficient evidence of teacher effectiveness in the classroom, Tennessee should consider basing decisions on cumulative evidence of performance, rather than just two years' ratings.
Tennessee recognized the factual accuracy of this analysis. The state added that individual teacher effect scores are based on three years of data when available, so there is more than two years' worth of cumulative data for tested teachers.
Tenure should be a significant and consequential milestone in a teacher's career.
The decision to give teachers tenure (or permanent status) is usually made automatically, with little thought, deliberation or consideration of actual evidence. State policy should reflect the fact that initial certification is temporary and probationary, and that tenure is intended to be a significant reward for teachers who have consistently shown effectiveness and commitment. Tenure and advanced certification are not rights implied by the conferring of an initial teaching certificate. No other profession, including higher education, offers practitioners tenure after only a few years of working in the field.
States should also ensure that evidence of effectiveness is the preponderant (but not the only) criterion for making tenure decisions. Most states confer tenure at a point that is too early for the collection of sufficient and adequate data that reflect teacher performance. Ideally, states would accumulate such data for five years. This robust data set would prevent effective teachers from being unfairly denied tenure based on too little data and ineffective teachers from being granted tenure.
Tenure: Supporting Research
Numerous studies illustrate how difficult and uncommon the process is of dismissing tenured teachers for poor performance. These studies underscore the need for an extended probationary period that would allow teachers to demonstrate their capability to promote student performance.
For evidence on the potential of eliminating automatic tenure, articulating a process for granting tenure, and using evidence of effectiveness as criteria for tenure see D. Goldhaber and M. Hansen, "Assessing the Potential of Using Value-Added Estimates of Teacher Job Performance for Making Tenure Decisions." Calder Institute, February 2010, Working Paper 31. Goldhaber and Hansen conclude that if districts ensured that the bottom performing 25 percent of all teachers up for tenure each year did not earn it, approximately 13 percent more than current levels, student achievement could be significantly improved. By routinely denying tenure to the bottom 25 percent of eligible teachers, the impact on student achievement would be equivalent to reducing class size across-the-board by 5 students a class.
For additional evidence see R. Gordon, T. Kane, and D. Staiger, "Identifying Effective Teachers Using Performance on the Job," The Hamilton Project Discussion Paper, The Brookings Institute, April 2006.