Word Generation (WG) is a research-based vocabulary program for middle school students designed to teach words through language arts, math, science, and social studies classes. The program consists of weekly units that introduce 5 high-utility target words through brief passages designed to spark active examination and discussion of contemporary issues. WG was designed with the understanding that promoting classroom discussion can result in particular kinds of academic benefits, such as improved word knowledge, reasoning, and expression. The IES funded evaluation of WG (as part of the Reading for Understanding initiative) is a school-level experimental study that includes two cohorts of schools randomized to treatment and control conditions. The first cohort has been studied for three years and the second cohort for two years; we present findings after the end of the 2nd year of the study and at the end of the 3rd year of the study.