Smoking at ones school or at ones previous school is a tradtion that has went on since the beginning of time (or at least since mary janes inception)
Everyone I know has done it or does it at least where I'm from.
Now I'm older with teenage kids and I even smoke at my kids high school when I take the dog for a walk. Something about it attracts pot heads like us I suppose.
It's not just schools if you think about it, it's really just public places in general that have great hiding spots and schools always seem to fit the bill.
When we were kids...before we were old enough to drive, we'd always go to the local baseball park and smoke in the dug outs that were sunk into the ground. what an excelent hiding spot. In the summer time, we'd find someone to buy us booze and we'd set up camp in there and party all night long. We'd have like 10-20 kids drinking and smoking in those dug outs because they were so well hidden. I dont even want to get into the times we would trip on acid back in the day, those stories would last hours!!
"Snootch to the mutha fucking Nootch!!"