An increasing number of states are requiring teacher performance, as measured by evaluations, be considered when districts are conducting layoffs or reductions in force, according to a 50-state policy review by the Education Commission of the States (ECS). ECS reviewed reduction-in-force policies in 2012 and recently created an online database, updating this information and making it more readily available. This report identifies the primary factor to be considered in each state's reduction-in-force policies and highlights states that prohibit the consideration of tenure or seniority in layoff decisions.