For decades, the Office for Civil Rights (OCR) has enforced civil rights in our nation's preschool through 12th grade (P-12) and post-secondary schools, which now serve almost 80 million students annually. In Fiscal Year 2015, the OCR promoted excellence in education through conducting investigations and monitoring schools under resolution agreements; ensuring equal access to educational opportunity through the release of policy guidance; providing technical assistance to enforce federal civil rights laws; and improving the Civil Rights Data Collection. The quality and pace of OCR's enforcement work remained high. OCR received a record-high 10,392 complaints, initiated 19 compliance reviews and directed inquiries, and resolved 9,250 cases overall, including 1,044 resolutions that secured changes protective of students' civil rights in schools around the nation. OCR developed and released nine policy guidance documents and hosted policy-related listening sessions with stakeholders on a variety of issue areas, including resource equity and resource comparability and discrimination based on race and national origin. OCR provided more than 250 technical assistance sessions to a wide range of stakeholders -- including schools and districts, state education agencies, colleges and universities, parent groups, nonprofit organizations, advocacy organizations, and other federal agencies -- and conducted other outreach to galvanize action on important civil rights topics. OCR administered and collected data for the 2013-14 school year Civil Rights Data Collection (CRDC) from approximately 97,000 public schools serving about 49 million students nationwide. This report gives examples of significant progress toward upholding the promise of equal educational opportunity for all students.