The 2015-16 Civil Rights Data Collection (CRDC) is a survey of public schools and school districts in the United States. The CRDC measures student access to courses, programs, staff, and resources that impact education equity and opportunity for students. The CRDC has long provided critical information used by the Department of Education's Office for Civil Rights in its enforcement and monitoring activities. This report includes statistics on: (1) Serious Offenses; (2) Law Enforcement Referrals and School-Related Arrests; (3) Harassment or Bullying; (4) Restraint and Seclusion; and (5) School Discipline. The following two sections close the report: (1) Data Highlights and CRDC Endnotes; and (2) More about the CRDC. Data collected for the first time includes: (1) Serious Offenses; (2) Firearm Use; and (3) School Homicides.