either get high, study high, write the test high and get high marks!!

or, set aside a few hours in the day wen u stay sober, and study. then, smoke the night before the test, wake up, stay sober, write the thing, and get high after.
u dont hav to smoke every waking second do u?

if u finding it so impossible to stay sober for a small portion of ur day, then i think u need to go to rehab or summin U FUCKING JUNKIE!!!

but serious, just stay sober for like a few hours to study. and a few hours to write the test.

getting high is more fun if u've just used ur mind heavily. trust me, u'll feel like u accomplished summin if u just controll ur habbit. weed shouldnt consume ur entire life, guy.