Who knew that redshirting (holding your child back before starting school) had a down side?  According to The New York Sun‘s Anna Phillips in a fascinating article, Harvard researchers warn that the “lengthening of childhood” has a price, even for affluent families.  Kids who start school a year later will start work a year later, cutting into their lifelong work experience and salary.

As usual, New York City private school administrators have their own ideas, mostly benefiting their own institutions.  More mature kids find school easier, so they are more likely to succeed in early grades, good news for the teachers who have to manage them.