Submitting a medium-of-instruction letter to Japan — how must it be translated and certified?

The subject of this page is “Submitting a medium-of-instruction letter to Japan”, so the answer below starts with what this case actually needs before setting out the general rules. The next step is confirming the filing channel and the copy or file format required. Some institutions accept documents only when sent directly by the school, so confirm the channel before translating. If the name on the record differs from the current name, attach the change-of-name evidence. If the receiving body confirmed its requirements by email, keep that message with the file. Keep a copy of every source document plus the receipt or docket from each step. For documents going abroad, include international shipping time in the plan. When several certification layers are required, start with the slowest one. Before starting, confirm with the receiving body whether it wants an original, a certified copy or a certified translation, then check that names are spelled identically to the passport or ID card on every page, then verify the source document is still within any validity window the recipient applies. The condition most often overlooked is that name spelling must match across every document in the set. The common failure in this group of cases is a translation that does not match the certification type required. The terms that frame this page are Submitting · medium-of-instruction · letter · Japan. The specifics here are document type: Medium; destination: Jp, and those decide which translation and certification level applies. A Thai educational document intended for overseas use is normally translated into the language the destination requires, then legalised by the Legalisation Division of the Department of Consular Affairs, Ministry of Foreign Affairs, and where the destination requires it, further legalised by that country's embassy or consulate. Many credential-evaluation bodies require the institution itself to send documents in a sealed envelope or through the institution's own electronic channel; an applicant or translator copy is not accepted as a substitute, so the body's own handbook must be read before translation is ordered. Thailand deposited its instrument of accession to the Hague Apostille Convention on 30 June 2026, but the Convention is not yet in force for Thailand, so consular legalisation through the Ministry of Foreign Affairs and the relevant embassy remains the working route; always confirm the current requirement with the receiving authority before filing. Cost and lead time depend on page count, language pair and the certification steps the receiving authority requires, so every file is quoted before work starts. Send a scan of the documents together with the receiving institution's own instructions via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th