This study reports an independent investigation of the psychometric properties of Desired Results Developmental Profile (DRDP), a teacher-rated measure of school readiness for preschool-aged children. In a sample of 2,031 low-income, 3- to 5-year-old children attending Head Start, we tested three measurement models: a higher order one-factor model, a seven-factor model, and a five-factor model. To explore the appropriateness of the DRDP for use with diverse populations of young children, we used multiple group and...