This study examined the effectiveness of a 30-hour health education inservice training for elementary school teachers. Effectiveness was assessed by measuring pretest to post-test (eight months apart) differences in health teaching self-efficacy, amount of time per week teaching health education, and amount of effort on specific health content areas. Workshop participants scored significantly higher than control teachers on efficacy expectations, outcome expectations, and outcome value subscales. Workshop participants also reported spending significantly more hours per week teaching health education and expending significantly more effort on a variety of specific health content areas than controls.