Increased emphasis has been placed on children's ability to enter kindergarten ready to learn, a concept referred to as "school readiness." School readiness has been defined by the Maryland State Department of Education as "the stage of human development that enables a child to engage in, and benefit from, primary learning…

Describes a study that compared academic achievement indices of summer birth date seventh-ninth graders (n=45) who entered kindergarten at age five with indices of similar summer birth date children who entered at age six (n=45). All statistically significant differences favored older males and females, especially in reading for older males. (SM)