This thesis presents the development of a high school-level astrophysical sciences course, designed as an extracurricular for students with an interest in astronomy. Since astrophysics is rarely included in standard high school curricula, this set of lesson plans stands as an extracurricular option: an accessible, noncalculus-based entry point for students from diverse academic backgrounds. Its primary aim is not necessarily to prepare for advanced study, but rather to cultivate scientific literacy and understanding of core concepts of astrophysics, cross-cutting ideas, and real-world applications. This set of lesson plans is informed by contemporary pedagogical research, with an emphasis on student-centered learning and the use of play as a mode of academic engagement.