Abstract
This article describes a qualitative study of college mathematics and science faculty (n = 6) and their engagement in a reform-based program, Japanese lesson study (LS), to change their teaching practices. LS is a process in which a team of four to six teachers jointly design, teach, observe, analyze, and revise a single class lesson. A series of semi-structured, open-ended, interviews was completed with each of the faculty participants. Two sets of assertions were developed from analyses of the data and examples and explanations corroborating each assertion are provided. The results of the study identified issues related to organizational and faculty changes that need to be addressed if faculty responses to pedagogical innovations are to succeed. Implications of the findings for practice and future research are discussed.