Data-based instruction (DBI) is a process in which teachers use progress data to make ongoing instructional decisions for students with learning disabilities. Curriculum-based measurement (CBM) is a common form of progress monitoring, and CBM data are placed on a graph to guide decision-making. Despite the central role that graph interpretation…

This research examines the specialized knowledge of reading comprehension articulated by 12 middle school English language arts teachers sampled from three different regions of the United States and representing various levels of teaching experience. Using detailed interviews, concept mapping, and think aloud methods, we identified salient…