As children transition from Early Childhood Intervention Services to public education, it is critical that the results from the assessment practices used to identify children for services in public education are translated into instructional techniques that early childhood educators are able to implement in the classroom setting. This article aims to describe best practices in assessment of young children who are transitioning from Early Childhood Intervention Services to public school services with specific emphasis placed on authentic assessment, and the potential benefits of this type of assessment as compared with traditional standardized assessment practices.