An examination of the characteristics of the children in Montgomery County, Maryland, who enter kindergarten through Early Entrance to Kindergarten (EEK), which allows young children to enter kindergarten if they are within six weeks of the entrance age cut-off and demonstrate readiness for kindergarten, and a comparison of the kindergarten and second grade academic performance of EEK children, their slightly older kindergarten cohort peers, and their same-age peers who entered kindergarten a year later, based on child assessment data and report cards