The authors are four preservice teacher educators who became collaborators and co-researchers to explore their preservice teachers' attitudes toward science and mathematics. The authors found significant differences among the PTs in the program, both in terms of their attitudes and prior experiences of science and math education, and in their confidence in engaging their students in these subjects. This collaborative research project provided two avenues for professional learning: the findings we established from the data collected from the PTs and the actual experience of collaborating and learning about each others’ philosophical stances.