This study introduces the Strategic Universal Design for Learning Course Development Framework™ (S-UDLCD™), the S-UDLCD™ Framework for Student Success™, and the Narinesingh Traffic Light Model™--three integrated, data-driven models designed to improve student retention, engagement, and instructional effectiveness in K-12 and higher education settings. Case studies from Sunrise High School and Barry University reveal significant gains in graduation and retention rates. Comparative analysis demonstrates the models' superiority over traditional UDL and MTSS/RTI frameworks, with strong implications for faculty engagement, institutional planning, and accreditation compliance.