This sounds like my 17 yo. son. My therapist recommended following : if not attending school he must get a job and contribute financially to house – pay own car insurance, gas etc., rent , some utilities, food- as if he had own apartment. Once he realizes what no education gets you working at fast food places and similar low paying jobs then he will finally be MOTIVATED to go to school. I met Russell Barkley once and he said adhd should be renamed Motivational Deficit disorder because that is more the issue than attention. Let me know your thoughts when you get a chance – we are struggling with same thing except he’s a junior in high school.