Changing schools in Korea: which offices should a student contact first to verify records?

A student considering a school transfer can first separate the facts that need confirmation: the current institution, the intended transfer date, the record that may change, and the office that issued each notice. A useful discussion asks how to identify the current contact point, how to keep a dated record of replies, and which documents should only be shown to the responsible office. Do not upload an ARC image, passport number, full address, tuition receipt, or another student's documents. Schools and immigration-related processes can vary by timing and individual status, so this thread should not predict eligibility or outcomes. It is for building a careful verification checklist before anyone acts.