Despite many school reform initiatives designed to ensure reading proficiency for all students, recent reports from the National Assessment of Educational Progress (NAEP) reveal that only 37 percent of fourth-grade students and only 34 percent of eighth-grade students performed at or above the proficiency levels measured in reading (NAEP, 2017). This quantitative study used a non-equivalent control group design to examine the impact of direct instruction of the Question-Answer-Relationship (QAR) strategy on standardized reading test scores of third-grade students. It also specifically examined the impact of direct instruction of the QAR strategy on traditionally underserved students' standardized test scores. A two-way Analysis of Covariance (ANCOVA) was conducted. Adjusted marginal mean post-test scores in the group receiving treatment of the QAR strategy (64.580) were higher than the mean post-test scores of students who did not receive QAR instruction (56.382). Adjusted marginal mean post-test scores of students who did not receive QAR instruction (56.382). Adjusted marginal mean post-test scores of historically underserved students showed no significant differences (60.05 and 60.90, respectively). In addition, adjusted marginal mean post-test scores of historically underserved and non-historically underserved students who received QAR instruction showed no significant differences (54.48 and 58.29).