Is $300,000 of Student Loan Debt a Lot?

The author's wife has $300,000 of student loans at 7% with her current employer. She's on pace for them to be forgiven in six years. Do I pay on it aggressively or do I pay the minimum in order to have the most amount forgiven? "We can't give specific, unique financial advice to you because we don't know all the other circumstance"