The ITERS-R is a thorough revision of the widely used program quality assessment instrument, The Infant/Toddler Environment Rating Scale. Designed for use in center-based child care programs for infants and toddlers up to 30 months of age, the ITERS-R can be used by program directors for supervision and program improvement, by teaching staff for self-assessment, by agency staff for monitoring, and in teacher training programs. The established reliability and validity of the scale make it particularly useful for research and program evaluation.