FWIW If your son studies abroad in Japan as planned, it will be longer than a 2 hour drive away.
The University of Puget Sound is well within 2 hours drive of SEATAC (the Seattle / Tacoma airpost). Or move to the Seattle area and the drive will be much less than a 2 hour journey.
Why the need or desire to limit the distance to a 2 hour drive if attending a residential school ?
Have you looked into your state school options in Pennsylvania ?
Maybe this website will help:
asianstudies.org/jobs-professional-resources/asian-studies-centers/japan/