The Individuals with Disabilities Education Act (IDEA) funds programs providing services designed to assist children with a range of delays and disabilities in achieving individualized developmental and functional goals. There are two types of programs. Part C Early Intervention is for children ages birth-2, and Part B Preschool is for children ages 3-5. States report data annually to the Office of Special Education Programs (OSEP) in the U.S. Department of Education on three child outcomes for Part C and Part B Preschool programs: (1) Social relationships, which includes getting along with other children and relating well with adults; (2) Use of knowledge and skills, which refers to thinking, reasoning, problem-solving, and early literacy and math skills; and (3) Taking action to meet needs, which includes feeding, dressing, self-care, and following rules related to health and safety. For Part C Early Intervention, a comparison of national averages from FFY 2020 to FFY 2021 showed some decreases in outcomes with an equal number of outcomes unchanged. For Part B Preschool, there was a decrease in the percent of children making greater than expected progress and exiting at age expectations in Social Relationships from FFY 2020 to FFY 2021. State Part C and Part B, Section 619 annual performance reports provided key reasons for declines, including impacts of COVID-19, other data quality issues, and changes to state data collection methods. Further analyses, particularly at the state and local level, are needed to understand trends.