I don't think there is ANY reason to keep your child back iun Kindergarten. Teachers expect children to be fully literate and shit by the time they reach Kindergarten and no this isn't a new phenomenon. I was put in "Pre-First". Because my teacher thought I was dumb 2 weeks into my Kindergarten year. It was a total waste of time. It was Kindergarten squared. My cousin is thinking about keeping her son back... Apparently she hadn't informed of of this yet he still came and said to her "Mommy I don't want to stay back..."