Many studies have been done on the short-term academic impacts of early-childhood education programs. The purpose of this study was to add to the educational literature on long-term impacts of early-childhood education programs by analyzing the long-term academic impacts that such programs had on students by the end of third grade. The variable of students' socioeconomic status was also incorporated into each research question. Students' aimswebPlus math and reading scores were used to measure their academic success. This study sought to determine if attending or not attending early-childhood education programs significantly impacted fall kindergarten reading and math scores as well as spring third-grade reading and math scores. Additionally, the researcher analyzed if there was a significant difference in scores between students who attended public early-childhood education programs and those who attended non-public programs. Participants included 142 students who completed third grade during the 2023-2024 school year. These students were enrolled in one of 13 elementary schools in a public school district in the Southeast that enrolls over 12,000 students. Results showed no statistically significant academic impacts on reading or math aimswebPlus scores based on participants' history of attendance in early-childhood programs. Although students who attended public early- childhood education programs scored notably higher in reading and math at the end of third grade than their peers who attended non-public programs, these findings were not statistically significant. The only significant findings involved the impact of socioeconomic status on students' math and reading scores for children who attended and who did not attend early-childhood programs. More details about the results of this study as well as the implications and recommendations for future research are discussed. [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.]