My son had $73K in student loan debt when he graduated with his MBA. His company has a 401k which offers a full match to 4% and an additional 1% if he raises that to 6%, which he has. Beyond that he is keenly focused on paying down that debt.
73k? That's ridiculous. Will that MBA be worth that investment? If yes, then paying it down won't take long. If not, then that was a poor investment. The problem with kids and school is they don't look at it like an investment. That's why while I'll always be supporting of what my kids want to pursue, I try to teach them to have a fall back skill or degree that's in demand or pays well.
If your son's MBA will raise his income and make him in demand for salary negotiations, then he should be able to wipe that debt out easily. Some employers who want sought after candidates for certain positions, actually offer to pay their loans off as a "signing" bonus. Happened to my wife. Top luxury retail company wanted her so bad for a position, it was negotiated into her contract