The Museum of Science and Industry, Chicago (MSI) formed the Institute for Quality Science Teaching (IQST) with the goal of improving science achievement of 4th-8th grade students in the Chicago area by creating a series of courses for teachers who lack the background in science or science teaching to teach effectively. This study was designed to evaluate teachers' increased content knowledge in one IQST course, Get Re-Energized (GRE), which focuses on energy topics. The study discovered improvement for teachers who received the course, and those teachers' students scored higher on energy