Key aspects of P.L. 99-457, the Education of the Handicapped Act Amendments of 1986, affecting handicapped infants, toddlers, and preschoolers from birth to age 5 are summarized. Presented in a question answer format the information digest addresses the following questions: What children are eligible for early intervention services? Are these services currently available? (a timeline for implementation is provided); What services must be provided? What must the Individual Family Service Plan include? How can a child be referred for early intervention services? When must states provide services to children ages 3 through 5? What type of services must be provided to children ages 3 through 5? How can a child be referred for preschool services? Also provided is a list, with telephone numbers, of the state lead agencies responsible for overall administration of the program. (DB)