School systems started the 2021-22 school year with extra resources and plans for recovery, but repeated resurgences of the COVID-19 virus thwarted hopes of a strong comeback. Schools continued to face a myriad of challenges including severe staff shortages, high rates of absenteeism and sickness, and rolling school closures forced by the pandemic's fallout. This brief continues NWEA's ongoing research agenda examining how the COVID-19 pandemic has affected student achievement in reading and math. The authors build on previous findings to examine students' achievement gains up to the end of the third school year impacted by the pandemic. To understand the cumulative impact of the pandemic on student achievement and look for initial signs of rebounding, this study used test score data from 8.3 million students in grades 3-8 who took MAP® Growth™ assessments in reading and math in approximately 25,000 public schools between 2018-19 and 2021-22. These data were compared to a sample of students of a roughly comparable size who tested between 2015-16 and 2018-19. [For the Technical Appendix, see ED623611.]