you can call the police and have your son and daughter and friends arrested and charges filed against them for possesion and smoking pot if you know they are doing it
once charged you can request they attended court mandated treatment bring in school reports to help back you up
cut a deal with the prosecutor
I have helped parents do it several times
call the school and tell them you suspect he is using they can test him
(most schools can at least)
if he is dirty...treatment
you are NOT NOT NOT NOT NOT their friend and if they are pissed at you for a long time...so be it
save your children antlers and don't worry about saving some sort of emotional attachment with them
my parents saved me
my life was more important than if I loved them for a year or not
