The content coursework of preservice secondary mathematics teachers (PSMTs) is a current topic of concern in both the mathematics and education fields. There is a need to determine the knowledge and dispositions necessary to teach secondary mathematics and how coursework can help PSMTs develop the appropriate knowledge and dispositions. In response, this study sought the perceptions on PSMTs' knowledge and dispositions from mathematics teachers who typically teach PSMTs. In addition, mathematics professors were asked how upper-level mathematics coursework could contribute to PSMTs learning of desired knowledge and dispositions. Results provide a picture of what professors articulate as important to preservice secondary mathematics teacher training and perceptions of their role in supporting the PSMTs' training. Implications for preservice teacher education and cross-department collaboration are discussed. (Contains 2 footnotes and 2 tables.)