ECSEServiceLocation indicates whether or not the Early Childhood Special Education (ECSE) student received their early childhood special education services in a regular early childhood program, which is defined as a program that is designed for typically developing children ages three through five (not in kindergarten) and is not specifically or primarily designed for children with disabilities and includes (at the time of the placement decision) a majority of at least 50 percent of nondisabled children (i.e., children without an individualized education program (IEP)).