Out-of-school learning opportunities can improve student academic achievement and support social-emotional learning. Such programming is valued by the public and in high demand. Teachers can also benefit from seeing students engage in learning in contexts that promote creativity, safe risk-taking, and a tolerance for ambiguity and failure. This profile presents WestEd's findings from high-level studies of five mathematics programs that created opportunities for students and teachers to build confidence, enjoyment, and skill. This brief summarizes the key features of each program.