This quantitative study sought to identify the impact of a mathematics curriculum that does not incorporate homework on mathematics achievement. Based on recent standardized testing data, educational practices must be examined to improve mathematics results. This study focused on one district setting that at the start of the 2023 school year adopted a mathematics curriculum that does not include homework and aimed to expand the knowledge on the impact of no homework for students in grades three to five math performance measured by the results from both the mathematics i-Ready Spring Diagnostic and the Pennsylvania System of School Assessment (PSSA) scores. These assessment results were analyzed before and after implementing a mathematics curriculum that does not incorporate homework. Additionally, this research examined the effectiveness of utilizing computerized adaptive testing (i-Ready) as a diagnostic tool. The i-Ready Spring Diagnostic scores were compared to PSSA scores over multiple years to determine their predictive validity through a regression model. No significant correlations were found between achievement and grade levels with a mathematics curriculum emphasizing homework and a mathematics curriculum deemphasizing homework. However, this study found significant differences for students in the 2022-2023 grade 4 with a mathematics curriculum including homework compared to the same students the following year with a mathematics curriculum that did not include homework. A significant difference with higher-achieving students was found as their performance declined after one year of implementing a mathematics curriculum that does not incorporate homework. The regression analysis revealed a significant predictive relationship between the i-Ready Diagnostic and the PSSA regardless of the mathematics curriculum. The findings from this study may guide educators in making informed decisions to increase student achievement in mathematics. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]