YISS is conveniently located next to the Hangangjin Station (Seoul subway) Line 6, Exit 1.
The following buses stop at the Hangangjin Station bus stop in front of the school.
Blue: 110A, 110B, 400, 405
Google maps can calculate your exact public transportation route to YISS. Simply enter your starting location into the box labeled A, then click "Get Directions".