So he lied again about school. This time to his aunt

I don't know where to take this. Lying is the most disrespectful thing someone can do and he
keeps doing it. He's not taking responsibility for re-taking 3 classes because of a less then nice email to the teacher. We're just mean for making him repeat classes. It's the natural consequence of telling a superior off. I don't get it. He seems just not to get it. How do I "beat" respect into him when I can't tell the difference between symptom and when's it's him "testing" us?
__________________
Dx:
Me- SzA
Husband- Bipolar 1
Daughter- mood disorder+
Comfortable broken and happy
"So I don't know why I'm tongue tied At the wrong time when I need this."- P!nk
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