Purpose: Opportunities to actively engage in literacy instruction should be accessible to all students in the classroom. Shared book reading provides a literacy-based context in which teachers may adapt their communication to allow students with a range of abilities to participate. The current study examines teacher communication during shared book-reading activities to understand what specific strategies teachers are using when children with developmental disabilities are included. Method: A shared reading activity was video-recorded in one classroom with and one classroom without students with developmental disabilities. Quantity of teacher communication was measured using the Systematic Analysis of Language Transcripts (SALT) tool, while communication functions were measured by adapting the Systematic Assessment of Book Reading. Survey methods reported teachers' typical classroom literacy instruction. Results: While both teachers used similar amounts of language, the teacher with students with developmental disabilities in her classroom used more literacy-related functions (e.g., referencing letters, phonics, decoding) to discuss print concepts and slightly greater communication to support comprehension of the story. Both teachers reported rarely--if not at all--using technology as an instructional strategy. Conclusions: SALT, an adapted assessment, and survey methods may capture differences in teacher communication during shared reading within heterogeneous classrooms. Understanding more about teacher communication yields important implications for intercollaborative practice to allow support for students with a range of abilities within inclusive literacy-based instruction.