Most international students do not need to obtain a student visa to attend the ISS. Most of them normally carry C-3 Visa which allows them to stay in Korea within 90 days.
However,it is the responsibility of the student to use his or her official letter of acceptance to obtain the correct visa, if needed,
to attend the ISS.
Prospective students should inquire with the closest Korean
consular office as to whether a visa is required for a 5-week stay
in Korea for citizens of their country.
Students who plan to stay longer than 90 days need to apply for Residence Permission at the Seoul Immigration Office within 90 days of their arrival in Korea.
※ If you need the certificate of admission to ISS for your visa application, you must submit a color scan of your passport (front information page) by email attachment (firstname.lastname@example.org).