The California Early Childhood Special Education “CalECSE” Network was funded by the California Department of Education in April of 2022 to support the areas of 1) Individuals with Disabilities Education Act (IDEA) Part C to B Evaluations, 2) Preschool Assessment Practices, and 3) Preschool Child Find. The CalECSE Network leverages collaboration amongst agencies, dissemination of resources, highlighting of existing exemplar practices, and direct technical assistance to improve the capacity, knowledge and implementation of evidence-based practices across agencies throughout California. The CalECSE Network is committed to improving outcomes for children and their families by eliminating and addressing barriers to successful transition for California’s youngest children with disabilities.