This from Tyler Cowen at Marginal Revolution;
With candy sales banned on school campuses, sugar pushers are the latest trend at local schools. Backpacks are filled with Snickers and Twinkees for all sweet tooths willing to pay the price. "It’s created a little underground economy, with businessmen selling everything from a pack of skittles to an energy drink,” said Jim Nason, principal at Hook Junior High School in Victorville.Update: From the Freakonomics blog comes the news that
When elementary and high schools ban the sale of candy and sodas, students create flourishing underground economies to satisfy demand for the sweet stuff.
In the ensuing crackdown, even high-profile figures are laid low.
For example, in Connecticut last week, an eighth-grade student body vice president was forced to resign after he was caught buying an illicit packet of Skittles from a classmate.