i smoked before one of my classes on friday (i have not smoked before class since high school) and got way higher than i thought i was going to... then i was sitting in the lecture hall and taking notes, realizing my notes didn't make any sense at all and whoever was sitting next to me must have known that there was something wrong with me lol. it was just the first day of class so there wasn't that much important stuff, i probably won't do it again for a regular class.