The 2017-18 Civil Rights Data Collection (CRDC) is a survey of nearly all public schools and school districts in the United States. The CRDC measures student access to courses, programs, staff, and resources that relate to Federal civil rights laws. The CRDC has long provided important information used by the U.S. Department of Education's (Department) Office for Civil Rights (OCR) in its enforcement and monitoring activities. As a collection, the CRDC is an aggregate of self-collected and self-reported data. Almost all reporting entities are school districts, and the district superintendent or an authorized designee certifies that the data they submit are true and correct. This report includes data on the following: (1) Who is in the CRDC?; (2) Restraint and Seclusion; (3) Data Quality Improvements; (4) Restraint and Seclusion based on Students with Disabilities; and (5) More About the CRDC.