Although Individualized Family Service Plans (IFSPs) specify the services families should receive, not all services planned for children and families are actually delivered. Analyses of data from more than 6,000 IFSPs in Indiana revealed that on average half of the service hours on IFSPs were actually delivered to children and families. Four types of early intervention services were most commonly delivered to enrolled children: occupational, physical, speech therapy, and special instruction. Mean rates of delivery for these services equaled or exceeded 55%. Several factors were associated with different rates of delivered services, including the child's current age, age at referral, and the length of time the child was enrolled in early intervention.