This article describes how participating in a computing program positively impacted young adolescents from underrepresented populations in STEM attitude toward STEM and interest in STEM- related careers. Nineteen sixth-grade students attending a rural, Title I middle school participated in the study. Five computing lessons were taught by undergraduate interns majoring in computer science, middle-level mathematics and science teacher education, and secondary mathematics teacher education. Analysis of quantitative and qualitative data provide convincing evidence that students’attitudes toward STEM improved and interests in STEM-related careers increased because of participating in the computing program