https://www.kidsmatterinc.org/ - A great website. Please navigate this site because like they say "Every child needs someone in their corner."
If you work with children you are a mandated reporter and any sign of abuse or neglect MUST be reported. The best number to call is your nearest DCFS, but the national hotline is - 1 (800) 4-A-CHILD
4 - 7 children die per day from child abuse in the United States. About three-fourths of the children who die are younger than four.