Heinich et al. (1999) introduced the ASSURE model to guide teachers in how to plan and deliver lessons that effectively integrate technology into their classroom teaching. Its straightforward, practical approach has made it one of the most widely taught instructional models in the education arena. However, for all of its widespread use, there is very little empirical evidence examining the impact the model has on K-12 learning gains. This study, over a 2-year period, examined 39 separate cases of curriculum being developed using the ASSURE model and the curricula's subsequent effect in promoting student learning. In addition to analyzing scores on student assessments, teachers' perceptions and instructional strategies also were examined as part of this study.