The Illinois State Board of Education (ISBE) website provides information and resources on this transition from early intervention services to early childhood education. ISBE transition information is found on their website under Indicator 12-Early Childhood Transition. Resources for families and professionals can be found on this page. All children who have been receiving services through Early Intervention and referred to an Local Education Agency (school district) for Early Childhood Special Education must have eligibility for services determined by their third birthday, and if found eligible, have an Individualized Education Program developed to provide special education services by their third birthday.