Abstract
Previous studies of initiatives in Writing to Learn and Writing Across the Curriculum/Writing in the Disciplines, while showing gains in knowledge retention and improvement in general writing skills, have not yet investigated the more fundamental issue of how writing supports development of domain-specific forms of thinking. Written samples were gathered from prospective teachers engaged in a year-long program of classroom observation and participation designed to advance their understanding of student success and failure. Ethnographic and quantitative methods provided evidence that their written accounts indicated an increased understanding that was aligned with the goals of the program.