The cutoff date for children in Tennessee to enroll in kindergarten has been moved back. Under the change approved by state legislation, in the 2014-15 school year, children must be 5 years old by Aug. 15 to enroll -- earlier than the current cutoff of Aug. 31. The previous deadline was Sept. 30. The move is part of a trend emerging nationwide in which districts -- and parents -- are in favor of giving students more time to mature before enrolling in kindergarten.