Meeting standardized test benchmarks is a challenge for elementary school students in Texas. The problem is that some elementary schools do not meet the performance standards of the fourth-grade STAAR state test average. Problem-based learning is a model used in schools to initiate problem-solving skills with a hands-on approach to real-world learning that aids to increase knowledge and skills across disciplines. The concept of problem-based-learning (PBL) is the framework for this study. Based on principles posited by Piaget and Vygotsky, PBL focused on the active and collaborative process of learning based on cognitive and social constructivist learning theories. Microsociety is one PBL program. The goal of this study was to determine if there is a difference in the 2016-2018 mean proportion of students who met performance standards in STAAR reading, mathematics, and writing tests between elementary schools with the Microsociety program and elementary schools statewide. The sample of the study included 7 elementary schools in the state of Texas that had a Microsociety program during the 2016-2018 school years. A quantitative comparative design and one-sample t-test were used to compare the mean of elementary schools who met expectations in Texas schools with Microsociety to the population mean of all elementary schools in Texas. The results of this study indicated that there was no significant difference between STAAR reading, mathematics, and writing for schools with and without the Microsociety program for the 2016-2018 school years. These results suggest that having a Microsociety program in a school does not influence state standardized test scores. To confirm this key finding, replication of this study in other states is recommended. [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.]