The National Child Abuse and Neglect Data System (NCANDS) is a voluntary data collection system that gathers information from all 50 states, the District of Columbia, and Puerto Rico about reports of child abuse and neglect. NCANDS was established in response to the Child Abuse Prevention and Treatment Act of 1988. The data are used to examine trends in child abuse and neglect across the country, and key findings are published in our Child Welfare Outcomes Reports to Congress and annual Child Maltreatment reports.
Further reading –
https://www.acf.hhs.gov/cb/research-data-technology/reporting-systems/ncands