This article presents a census of empirical studies on the scholarship of teaching published in "Teaching of Psychology", "Psychology Learning and Teaching", and "Scholarship of Teaching and Learning in Psychology" over the past decade. All articles from each issue were coded for characteristics identifying the teaching context in which the research was conducted, focusing on institution type using Carnegie classifications and average class size. The majority of studies on the scholarship of teaching and learning in psychology were carried out in smaller classes (less than 40 students/class) in settings characterized as Master's or Doctoral institutions. These data suggest an underrepresentation of studies from 2-year Associate's colleges, as well as from larger enrollment classrooms. Implications are discussed for conducting research in the diverse classroom settings representative of psychology instruction.