Tennessee’s Tougher tenure rules improve teacher performance

In Tennessee, changes to teacher evaluation and tenure beginning in 2011-12 led to improvements in how effectively teachers raised student test scores. Previously, teachers automatically received tenure after three years on the job. The new rules required five years and demonstrated performance based on classroom observations, student test-score growth, and other measures.

The state shifted its focus to individual teacher effectiveness following a federal grant program encouraging performance-based systems.

These reforms included annual teacher evaluations with detailed observations and data on student learning. By 2022, 23 states had begun to tie teacher pay to performance, and 22 states considered performance in tenure decisions. Researchers studied teacher performance from 2008 to 2015, comparing teachers new to the profession with those already tenured. They found that new teachers anticipating the stricter tenure requirements improved their performance significantly, value-added increased by 4.7 percent of a standard deviation of student test scores.

Even teachers already tenured showed improvement with the new evaluation system, though to a lesser extent. Importantly, these gains were lasting. Teachers continued to perform at the higher level even after earning tenure, suggesting the changes led to genuine skill development rather than just short-term effort to meet requirements. The cumulative effect of the new rules on new teachers' value-added growth over six years was 7.9 percent of a standard deviation.