This project entailed a two-part approach for making suggested revisions to the NAEYC accreditation system. The first was an annotated review of the current early education research literature to provide research-based evidence that either supports or contradicts performance standards and criteria proposed by NAEYC commissions, and to inform the selection of the final standards and criteria. Following the development of the revised accreditation tool, CICCQ conducted a validation study to determine construct validity of the new tool. A field test of the accreditation tool was conducted in 20 sites. Results from this field test were used to modify the instrument prior to the validation study.