Assess educators' ability to evaluate the effectiveness, safety, and equity of school-based comprehensive physical activity programs for preventing childhood obesity; content includes program components (curriculum, recess, active transport, after-school), outcome measures (BMI, fitness, activity levels, psychosocial outcomes), evaluation methods and study design (RCTs, quasi-experimental, process evaluation, fidelity, effect sizes), safety risk assessment (injury prevention, staff training, facilities), equity analysis (access, cultural relevance, socioeconomic and disability inclusion, differential impacts), interpretation of data, critique of evidence quality, design of improvement recommendations, and policy/implementation considerations.