Purpose: The purpose of this study was to evaluate the impact of using Imagine Math Facts on student mathematics proficiency. Methods: This retrospective study compared the performance of Grade 1-5 students who used or did not use the Imagine Math Facts program on a standardized assessment of mathematics proficiency. Statistical matching was utilized to account for baseline differences and generate comparable study groups. Comparisons were conducted globally and across individual grades. Results: Early elementary students who used Imagine Math Facts scored 6.7 points higher on a standardized mathematics assessment than similar non-user students. More specifically, Grade 2 users of Imagine Math Facts achieved statistically higher scores on the standardized mathematics assessment than students who did not use the program. Implications: This study provides evidence of the effectiveness of Imagine Math Facts on mathematics proficiency for early elementary students. [This report was prepared by Imagine Learning.]