Talk with your advisor. I believe your major advisor if you stay or go. Graduate school policy may not overwrite your advisor's decision. The advisor could argue for you based on your part-time research work load, which could affect your coursework.
【在 k****g 的大作中提到】 : Damn, shame on u. Never heard things like u. Taking courses for a PHd : student is just 10% of ur Phd journey. Quit or change ur direction.