9 37 15 is the anwser
you look for the locker that is different then the others :-D
after the guy leaves you go to Greg's and open the curtain
Open Greg's locker.
Open Greg's locker.
you cant.
you have to get the scrap of paper with the numbers on it.
You find the completely white locker, and click on it answered by Danae
Open Greg's locker.
you go into the bathroom and flush yourself down the toilets
you go to the school go inside go to the bottom right hand corner the 8th locker 9,27,15
fist go to the school and open the guys locker and there will be a guide and it will tell you what to do
the 7th from the right and 8th from the left ( make sure you are doing it on the bottom set of lockers)