Researchers examined how elementary- and middle-school students performed on the spring 2022 state assessment. The research, which uses quasi-experimental matching techniques to isolate the impact of Zearn Math on student achievement, compared students who consistently completed three or more Zearn lessons each week with similarly matched students who did not consistently use Zearn Math<cms-citation-text>[1]<cms-citation-text>. Unlike a standard correlational analysis, this method allows differences in outcomes to be more confidently attributed to Zearn and not to other variables. Researchers found:

- Elementary- and middle-school students who consistently used Zearn had
**4.2 times the growth in their state assessment scores**than students who did not use Zearn. - Consistent Zearn usage resulted in a
**double-digit increase in proficiency for Black and Latino Students, economically disadvantaged students, and multilingual learners**, compared to declines in proficiency for matched students who did not use Zearn<cms-citation-text>[2]<cms-citation-text>. **Across all starting levels of proficiency**, students with consistent Zearn usage were more likely to improve their proficiency level.- Students at the
**lowest level of math proficiency were three times more likely to improvetheir proficiency level**when they used Zearn compared to students who did not use Zearn.

<text-style-figure>FIGURE 1<text-style-figure>

**Students who consistently used Zearn had 4.2 times the growth on the 2022 state assessment than students who did not use Zearn.**

<text-style-figure>FIGURE 2<text-style-figure>

**Consistent Zearn usage resulted in a double-digit increase in proficiency for each student subgroup, while similarly matched students experienced declines. **

Additionally, students in this district saw a 16 percentage point increase in the percent of students meeting proficiency on the state assessment among students who consistently used Zearn<cms-citation-text>[3]<cms-citation-text>. By contrast, among students who did not use Zearn, there was an eight percentage point decrease in students reaching proficiency.

This increase in students meeting proficiency was even greater for students in historically marginalized subgroups. Consistent Zearn usage resulted in a 22 percentage point increase in proficiency for multilingual learners.

<text-style-figure>FIGURE 3<text-style-figure>

**Across all starting levels of proficiency, students with consistent Zearn usage were more likely to improve their proficiency level. **

The gains in math learning from consistent Zearn usage held true for students at every starting level of proficiency. Across all three starting proficiency levels, students with consistent Zearn usage were not only more likely than their similarly matched peers to move up a level on the state assessment, but also less likely to move down. Specifically, 63% of students who scored above proficiency in 2021 and did not use Zearn moved down a level on the spring 2022 state assessment, compared to only 38% of students who consistently used Zearn.

<text-style-figure>FIGURE 4<text-style-figure>

**Students at the lowest level of math proficiency were three times more likely to improve their proficiency level when they used Zearn compared to students who did not use Zearn. **

Zooming into students who started the school year below proficiency, students who scored at the lowest level of math achievement in 2021 who consistently used Zearn during the 2021–2022 school year were three times more likely to score at a higher proficiency level in spring 2022 compared to their similarly matched peers who did not use Zearn. Thirty-eight percent of lowest-scoring students moved up at least one full level in 2022.