This qualitative multiple case study examined four preservice teachers' planning and perceptions of planning for culturally and socially relevant disciplinary literacy instruction in secondary disciplines. Four disciplines were represented: art, English, history, and physical education (P.E.)/health. This research sought to understand how a secondary literacy course and its requirements, with a particular focus on culturally relevant disciplinary literacy (CRDL) instruction. Particularities of the four disciplines of study represented were also considered to inform crosscontent literacy coursework. Findings indicated preservice teachers (PSTs) recognized potential of CRDL to engage students in critical thought. However, core disciplines (English and history) had varying viewpoints of the reality of such instruction compared with noncore disciplines (art and P.E./health), and all PSTs struggled to perceive CRDL as a primarily student-focused approach to instruction.