**What is the potential of educational software for remediation?**

Educators must balance the need to remediate students who are performing behind grade level with their obligation to teach grade-appropriate content to all. Educational software programs could help them strike this balance by incorporating below-grade-level content into an existing curriculum, allowing students to learn at their own pace while remaining in the same classroom as their peers. If effective, this practice could save school systems the high costs of more intensive remedial interventions like high-dosage tutoring, summer school, extra coursework, and grade retention.

**How did this study examine the effectiveness of educational software for remediating below-grade-level students?**

This study estimates the causal effects of providing low-performing students in grades 3-6 with below-grade-level math content via an online software program. Students who scored below a designated cutoff on a prior-year math assessment were assigned a modified version of the software program. The modified software included below-grade-level content before the grade-level material. Students who scored above the cutoff received only the grade-level curriculum. We examined whether receiving the modified curriculum affected students’ completion of grade-level learning objectives, pre- and post-objective quiz scores, and math test scores