Using Coarsened Exact Matching (CEM), this analysis examined the impact of Zearn Math across 7,116 matched pairs of students in 31 Louisiana parishes. Students who completed an average of 3+ Zearn Math lessons per week during the 2021-2022 school year were compared to similarly matched peers who completed less than 1 lesson per week. Findings showed that, on average, students who used Zearn Math grew an additional 6.3 scale score points on the Louisiana Educational Assessment Program (LEAP) compared to non-users. Students who started the year below proficiency gained an additional 8.2 scale score points, the equivalent of 1.3 years of learning, compared to non-users. Consistent Zearn Math users were also more likely to improve their Achievement Level, had a higher percentage of students placing at the "Mastery" level or above in spring 2022, and had higher probabilities of students meeting their 2022 target score. [This report was published by Zearn.]