The Early Intervention (EI) Program of the Carbon Lehigh Intermediate Unit #21 is a federal and state public special education service provided to children ages three to five years of age who are experiencing a delay in their development.  These children are evaluated and found to be eligible for special education services under the guidelines of the federal Individuals with Disabilities Education Act (IDEA) regulations. The CLIU EI Program, operates under the direction of the PA Office of Child Development and Early Learning (OCDEL).