This study used a multiple probe design to evaluate the effects of a teacher-implemented video-schedule intervention on the mathematical skills and untargeted challenging behaviors of five elementary-school students with autism. Results indicated that the intervention was effective in improving participants' academic performance, and a decrease in the level of challenging behaviors and stereotypy was observed for participants following the introduction of intervention. Additionally, academic gains generalized across academic problems and to a small group setting, suggesting that this technology-based intervention is an efficient use of instructional time. Future research targeting a variety of academic skills and examining intervention implementation by additional practitioners (e.g., teaching assistants) is warranted.