This article describes the development of an instrument to measure the multiple dimensions of student-faculty interactions. The sample consisted of 318 students (114 males, 203 females; 58% White, 16% African American, 9% Hispanic Americans) who completed the Student-Professor Interaction Scale (SPIS). Eight dimensions were identified, with Cronbach alphas ranging from 0.51 to 0.92. Dimensions of student-faculty interactions were related to academic motivation and academic self-concept for the majority White sample, but only academic self-concept for the ethnic minority sample. African American and Hispanic American students reported feeling less connected with professors, perceived their experiences with faculty as more negative, and perceived faculty as less respectful when compared to White students. Implications for student affairs research and practice are discussed. (Contains 4 tables.)