Although most states require children entering kindergarten to turn 5 by late summer or early fall, some, such as Connecticut, set the date as late as Jan. 1 of the kindergarten school year, meaning some kids are 4 when they start.
“No matter when you set it, you’re always going to have a classroom of kids who have at least 12 months of developmental difference,” says Kristie Kauerz, who directs the National P-3 Center at the School of Education and Human Development at the University of Colorado at Denver.
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