This study examined the effects of Collaborative Strategic Reading (CSR) on informational text comprehension and metacognitive awareness of fifth grade students. This study tested the theories of metacognition and social cognition with a focus on self-regulation and self-efficacy. Participating students included a heterogeneous mix of regular education students, students with disabilities, and English learners (ELs). Using a quasi-experimental pretest-posttest nonequivalent control group design, this study examined the effects of CSR on informational text comprehension using the Qualitative Reading Inventory-5 (QRI-5) and Georgia's Criterion-Referenced Competency Test (CRCT). Metacognitive awareness was measured using the Metacognitive Awareness of Reading Strategies Inventory (MARSI). Data was analyzed using multivariate analysis of covariance (MANCOVA) and multivariate analysis of variance (MANOVA) due to correlations between the dependent variables and the need to use student reading level and student subgroup as covariates. The MANCOVA analysis found a statistically significant difference on the QRI-5 between the experimental and control groups with the experimental group outperforming the control group, while controlling for student reading level and student subgroup; however, there was no statistically significant difference on the CRCT or on CRCT reading domains. The MANOVA analysis found no significant difference between the experimental and control groups on the MARSI and MARSI subscales. [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/en-US/products/dissertations/individuals.shtml.]