Here's the problem: The Feds say that schools permit sale of candy or sodas until after school is out. So, soda machines don't function until then. The school cafeteria cannot, according to the Feds, sell any of that to students. [Cookies are still OK-- until the Feds change the rules again.] Teachers cannot use candy as rewards or incentives-- unless they give the incentive after school is out.
Now, let me tell you-- kids in our middle school bring their own candy and they eat it all day long [and that's no exaggeration]. They will have no teeth by the time they're 35. Dentistry is the career of the future.