According to The Wall Street Journal, the beverage industry is bringing unhealthy drinks back to school vending machines. In May of last year, the industry agreed to stop selling full-calorie sodas and limit the sizes of certain other beverages.

Well the agreement has since been modified to allow certain iced teas and vitamin-fortified waters with fewer than 100 calories per 12 ounces.

A critic from the Center for Science in the Public Interest was disappointed with the move, and with good reason. The original guidelines were flawed to begin with. Most kids are simply not active enough in schools to justify drinking beverages like PepsiCo, Inc. (NYSE: PEP)'s Gatorade and The Coca-Cola Company (NYSE: KO)'s Powerade.

With the burgeoning obesity epidemic among children, we need more stringent regulations of what's sold in schools. If you don't believe me, look around. Parents should be able to send their kids off to school without having to worry that they will be lured in by unhealthy drinks.