The "EdResearch for Action Design Principles Series" focuses on a single program or practice that has been proven to have positive effects on student outcomes. Authors -- leading experts from across the field of education research -- look across many high-quality studies of similar programs to identify the components and conditions that are key to its effective implementation. The Design Principles Series helps practitioners adapt and successfully implement an evidence-based program to meet the needs of their target population. This brief looks at evidence-based design principles for reducing summer melt and helping students make it to college. This brief looks to answer the follwing question: How can schools and districts design and deliver supports that ensure college-intending high school graduates successfully enroll in college?