The goal of this study was to further evaluate the impact of IXL Math on math learning outcomes. Using a quasi-experimental design with matched treatment and control groups, this analysis utilized data from 312 public schools in Mississippi during the 2021-2022 school year. The middle school analysis included 272 schools (136 treatment, 136 control), and the high school analysis included 40 schools (20 control, 20 treatment). IXL adoption in treatment schools ranged from about 1 question answered per week to more than 140 questions answered per week. Even with these variable adoption rates, students' test scores demonstrated positive and statistically significant effects of IXL usage, as measured by the Mississippi Academic Assessment Program (MAAP) in middle school and the ACT in high school.