Houston ISD's EVAAS Teacher-Evaluation System Reportedly Put Teachers' Jobs at Risk Through Unverifiable Scores

From 2011 to 2015, Houston Independent School District used SAS Institute’s Education Value-Added Assessment System (EVAAS) to rate teacher effectiveness from student test-score growth. Teachers alleged that proprietary, unverifiable EVAAS scores contributed to terminations and contract nonrenewals. On May 4, 2017, a federal judge allowed due-process claims over the system to proceed.