Peter Orszag, former director of the Office of Management and Budget, writes in Bloomberg:
To put it unkindly, the average child becomes dumber and fatter during the vacation. And although there’s no need to declare war on summer, there’s plenty we could do to combat the seasonal learning loss and weight gain. ...
Let’s start with the most ambitious option: lengthening the school year. I have written previously about the benefit of extending the hours of the school day. A similar argument applies to extending the academic year: More time at task helps children learn, and it would be worth the extra expense involved.
To recap: Orszag says Summer time makes kids fatter and dumber and he proposes lengthening the school day and year.
Something tells me he's good with kids.