Yes, don't worry, the rest of your teaching years on that school will be counted as well.
I'd also like to know on what do I need to do if I'm ready to apply for the unpaid refund discharge?
Then you must complete the Loan Discharge Application: Unpaid Refund and send the completed form to your loan servicer.
What if I want to apply for an unpaid refund discharge, but my school has closed down?