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We construct average 2019, 2022, and 2023 math (or RLA) test score estimates using state standardized math (or RLA) tests taken by public-school students in grades 3 through 8 in each year, and data from the NAEP. The change estimates in each subject are calculated as the difference in the average test score estimates between the two years. For example, the 2022-2023 change is calculated as the average math or reading test score in 2023 minus that in 2022.