International comparisons, including the work of TIMSS researchers (e.g., Schmidt and others 1996) and Ma (1999), suggest that students in the United States typically get fed a diet of thin content, “a mile wide and an inch deep,” as Schmidt is often quoted as saying (e.g., Schmidt, McKnight, and Raizen 1996). Both in survey and video-tape analyses, TIMSS researchers found that U.S. students were exposed to a curriculum that was thin and fragment-ed. “The content appears to be less advanced and is pre-sented in a more piecemeal and prescriptive way” (Stigler and Hiebert 1999, p. 57)