But studying abroad in college is MUCH more common, and that's a crazy agr gap. If it's HS/MS, it makes me wonder if it's a Liu thing (I'm assuming the family is quite rich.)
If it's Uni, I already have a headcanon that John said 'screw you guys and your exorcism, I'm becoming a lawyer/fashion designer/etc,' and then the grandfather says YOU ARE NO LONGER WELCOME HERE.