The Early Start Denver Model Curriculum Checklist for Infants and Young Autistic Children, Second Edition, is used to comprehensively assess children’s skills across multiple developmental domains and to establish individualized teaching objectives and plans. The second edition includes new items appropriate for infants as young as 6 months of age. Checklist item descriptions and an overview of administration practices are provided at the companion website. Administered every 12 weeks, the Checklist is an essential component of the intervention described in the authoritative manual, Early Start Denver Model for Young Autistic Children, Second Edition. Sold as a set of 15 Checklists, each a 16-page two-color booklet.