The Capistrano Unified School District in Orange County, Calif., has experienced much academic success. Thirty-seven of its 55 schools have been named California Distinguished Schools, and 11 schools were named National Blue Ribbon Award for Excellence in Education winners. The district’s schools continually rank in the top 10% in California based on statewide assessment data. In addition, Newsweek (May 16, 2005) identified all five of its high schools as being in the top 2% of the nation’s schools. So why would a school district achieving such dramatic success challenge itself to completely restructure the educational process? District leaders annually audit achievement data, closely examining disaggregated information from a host of standardized tests, including the Advanced Placement exam, the International Baccalaureate, Preliminary Scholastic Achievement Test, Scholastic