This book will be helpful to anyone who desires to use the ITERS-R accurately and reliably in an effort to improve program quality, towards the end result of clearly understanding early childhood programs, so improvements can be implemented. It will assist be helpful to the practitioner who is using the ITERS-R in self-assessment, and needs to know what to do to meet a requirement. It will be useful also to those who provide technical assistance in program quality enhancement initiatives and want to ensure efforts, so that the guidance provided is based upon accurate interpretations. It will also increase the reliability and be especially useful to those observers who evaluate program quality for monitoring or research, by increasing reliability among observers.