From the Child Find website
Child Find is a component of Individuals with Disabilities Education Act (IDEA) that requires states to identify, locate, and evaluate all children with disabilities, aged birth to 21, who are in need of early intervention or special education services. This Child Find web site is mainly focused on Part C of the IDEA, the Early Intervention Program for Infants and Toddlers with Disabilities. However, much of the information and many of the links listed on the Child Find web site can be useful in conducting child find for all young children, not just child find for infants and toddlers.
Child Find website HERE.