I have 2 kids and one on way. Oldest will be 4 in late June. I plan to send her to Kindergarten next fall (fall '13). I grew up in Austin Westlake. I live in Highland Park. "Redshirting" is rampant both places. I recall moving from Corpus Christi to Austin when I was in 6th grade. I remember thinking how much older everyone was at my new school. How a lot of boys had facial hair, and I had never seen boys with facial hair. And I had always been (and going forward, would be) one of the biggest in my class. But, I graduated as one of the youngest. College, same. While I am one person and by no means an expert, holding kids back is exactly what the term figuratively implies, and I agree completely with this article: Redshirting Recently there have been several mothers who look horrified at the thought of my wife sending our oldest (and soon to be here 3rd - due in late July / early August) to Kindergarten as soon as able. And unless my kids are way behind, I think the idea of holding your child back is horrifying.