academic redshirting
n.— «Concern about the academic fate of children who stumble in the early grades is driving up the entrance age for kindergarten at schools across the United States. In some states, education policy-makers are taking the step on their own, but often it is the parents who decide to hold their children back and enroll them when they are closer to 6 than 5.…Ralph Frick, an Atlanta University education professor who favors the trend, has another term for it: “academic redshirting.”» —“‘Graying’ of Kindergartners: Parents Fear Failure, Hold Children Back” by Christopher Connell Los Angeles Times Aug. 16, 1987. (source: Double-Tongued Dictionary)