This study surveyed students who had participated over a 10-year period in California Teach courses, which integrate evidence-based, best practices of pedagogy, internship, and reflection. The authors found that well-crafted service-learning courses for STEM (science, technology, engineering, and mathematics) majors, which include internships in K–12 schools, create positive and lasting changes in attitudes toward public school teachers, in interest in future volunteering in public schools, and in intentions to support outreach efforts in the workplace.