I know it doesn't count anymore...
But I spent my HS years and then some, toking away. I barely remember my 11th grade year in school. Only foggy bits and pieces. I also blame my now HORRIBLE short term memory on the longterm effects.
Waking and baking is what I did for at least 5 years straight. Maybe missed 10-15 days out of the entire year due to sickness, although I did take a forced 9-week break due to Mono, but the day I was better, I was smoking a fiiiine but really mellow Blueberry strain.
I've been ganja free since Jan 2005. I do miss it, but I don't miss it enough to go back. Cigarettes have since replaced it, and I'm a serious Hookah smoker as well (got 3 VERY beautiful handmade pipes).