The aim of this qualitative case study was to investigate the process of the enactment of a project-based learning method in an Advanced Placement American Government and Politics course and the effects of contextual factors, the beliefs of the teacher, and environmental factors had on the planning and implementation of PBL-aligned tasks. This study also investigates the experiences and perceptions of students in an Advanced Placement American Government and Politics course that enacted project-based learning. The study was conducted to add to the literature on project-based learning. Research on the steps a teacher takes to enact project-based learning can enhance understanding of the method and provide an increased understanding of implementation. This was a qualitative case study. The research was gathered using narrative inquiry, examination of documents, and observations to investigate teacher enactment of a project-based learning task. Semi-structured video-elicitation interviews, document analysis, and observations were conducted to investigate the experiences and perceptions of students who used project-based learning tasks in an Advanced Placement American Government and Politics class. The research of a teacher enacting project-based learning resulted in the identification of teacher's beliefs as the foundational element for constructing pedagogy. Through the enactment of project-based learning, three themes emerged: the need for communication, alignment of tasks to key concepts, and flexibility. The perceptions of students in an Advanced Placement American Government and Politics course confirmed the importance of student choice, the value of collaborative and social learning experiences, and the desire to discuss controversial issues. [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.]