A C-STEM Challenge Competition is a highly motivating competition that engages students in multi-age groups to collaboratively identify, design, and build innovative solutions for up to eight different Challenge modules: Debate, Robotics Prototyping, Innovation, Coding, Sea Turtle Sculpture, Mosaic Mural, Film, and Photography. These modules are designed by industry professionals and national standards-aligned project-based learning activities, thus demonstrating the impact of teacher training on student learning and student performance in a STEM competition environment.