mom...my bad.

if he's that far out of line and he respects you so little that he'll disregard everything you say then he probably needs outside help to realign his path. he's already shown his responsibilty level and is showing his lack of respect for you by continuing with the same behavior that got him in trouble in the first place...he needs to realize this can affect his future, immediate and the not-so-distant. have you talked with the school guidance office? they can probably give you a lot better advice than we can and are much closer to the situation.