This State-specific summary report serves as an assessment of the District of Columbia's annual Race to the Top implementation. The Year 3 report for Phase 1 and 2 grantees highlights successes and accomplishments, identifies challenges, and provides lessons learned from implementation from approximately September 2012 through September 2013. In Year 3, the Office of the State Superintendent of Education (OSSE) continued to provide professional development opportunities for educators on implementing the Common Core State Standards (CCSS) and expanded and promoted its CCSS resource website, LearnDC.org. After years of delays, OSSE successfully launched the State Longitudinal Data System (SLDS) for use in school year (SY) 2012-2013. OSSE released the Standards Entry-Points for Differentiated Learning manual for mathematics instructors, a consortium-developed manual for special education teachers. All 30 participating local educational agencies (LEAs) implemented an instructional improvement system (IIS). Three competitive grant programs, Charter School Teacher Residency (Pipelines), Professional Learning Communities for Effectiveness (PLaCEs), and Expanded Growth Measures, were expanded to include additional teachers, schools, and LEAs. After nearly a year of stability, OSSE experienced additional staff turnover, vacancies of key positions, and another agency staff audit and restructuring. While all participating LEAs implemented an IIS, one of the IIS consortia did not have a Lead LEA for the majority of Year 3, leading to a lapse in the Community of Practice (CoP) and support for the member LEAs. A glossary is included. [For "Race to the Top. District of Columbia Report. Year 2: School Year 2011-2012. [State-Specific Summary Report]," see ED539233.]