This study examined the influence of grouping formation on the scores on the New Jersey Assessment of Skills and Knowledge (NJASK 3) in Grade 3 English Language Arts. Grouping within the general education classroom was compared to grouping between the same grade level. The analysis included a multiple regression model for student variables gender, race/ethnicity, prior ability and grouping status. All data explored in this study pertained to 155 third graders in one New Jersey suburban district during the 2012-2013 academic school year. The results of the study revealed prior ability in reading influenced the scores on the NJASK 3 reading section when combining gender, race/ethnicity, and grouping status in the model. Grouping status, gender, or race/ethnicity were not significant influences on the NJASK 3 reading scores in the multiple regression model. [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://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]