it's an old saying but... It will be a great day when the schools have all the money they need and the Air Force has to have a bake sale to afford its next bomber.
Also I remember a thread on here a while ago where it was pointed out by a certain administrator how good a camouflage 'maters make for cannabis. 
All of the big grow-ops are on public school property these days, you didn't know? You've never heard the theory 'hide it in the most obvious place'.

Nope, some of them are behind the DEA offices like in Dallas, TX! http://cbs11tv.com/local/marijuana.dea.drug.2.504416.html
Big_T
Pantano said she did not want to make too big an issue out of the raid, but questioned why such a commotion was necessary when anyone who asked would have been given a tour of the greenhouses.
"We're sitting here as a teaching staff, always short on money, and we're thinking, 'Gosh, all the money it takes to fly that helicopter and hire all those people, it would be great to have this for education.' "