With the increased growth of career opportunities in STEM fields, educators and policymakers have sought to better understand the nature and development of students’ self-efficacy for science, interest in science, and future plans to pursue science pathways. However, our understanding of these motivational constructs has largely been based on studies of predominantly White samples, neglecting the perspectives and experiences of students from historically marginalized groups underrepresented in STEM academic and career pathways. In the present study, we used a mixed methods approach to examine science motivation in six high school students of color who participated in a brief, near peer mentoring program with undergraduate mentors of color. Our quantitative survey findings, as well as inductive coding of semi-structured interviews, revealed that science self-efficacy, interest in science, and future plans in science center around the importance of forming and maintaining interpersonal connections with others. These data point to the utility of a sociocultural perspective in expanding our understanding of motivational processes in a way that is more inclusive of the experiences of racial and ethnic minority youth.