The STEM Achievement in Baltimore Elementary Schools (SABES) program is a community partnership initiative that includes both in-school and afterschool STEM education for grades 3-5. It was designed to broaden participation and achievement in STEM education by bringing science and engineering to the lives of low-income urban elementary school children. The authors' study of the out-of-school time (OST) program suggests that community-focused student-driven projects can help low-income urban elementary students develop an understanding of the engineering design process (EDP).