WANNA MAKE A STAND TO MY PARENTS
Well, how your parents see your use of cannabis really depends on what type of kid you are? Do you have any other hobbies that they do approve of? Are you doing well in school? If not, then it will be a lot harder, because you can't show that cannabis has not caused or at least contributed to your problems. If you are pretty well balanced and you are not a cause for concern for your parents, it will be a lot easier to convince them that minor cannabis use will not be an issue. :)
WANNA MAKE A STAND TO MY PARENTS
Sound advice from sawleaf. point out your positives to your dad while explaining your responsible recreation of the herb does not hinder an otherwise productive lifestyle.
Even Abraham Lincoln said, "It has been my experience that folks who have no vices, have very few virtues."