A medium-of-instruction letter — what should you know about Thailand's apostille status?

The matter being asked about is “A medium-of-instruction letter”, so it covers both the requirements attached to this document set and the order the steps must follow. After filing, follow up on the cycle the office states rather than waiting past the deadline. High-resolution photos of seals and signatures help when the destination asks for re-verification. Note who signed each certification and on what date for later reference. Documents with a short validity window should be produced as close to the filing date as possible. With a fixed filing date, count backwards from it and book each certification step in reverse. Education files normally pair a transcript with a qualification certificate, and institutions check both together. If the name on the record differs from the current name, attach the change-of-name evidence. The terms that frame this page are medium-of-instruction · letter · know · Thailand's. The specifics here are document type: Medium, and those decide which translation and certification level applies. Before starting, make sure document numbers, issue dates and issuing-office names match across the set, then keep a digital copy of every page, including seals and signatures, then plan the timeline so certification finishes before the real filing deadline. The common failure in this group of cases is a translation that does not match the certification type required. What changes the timeline most here is whether the source documents are complete on day one. 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. 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. ILC handles document work only — translation, certification of the translation, notarial signature certification and the legalisation run at the Ministry of Foreign Affairs and embassies. ILC is not an educational institution or a credential-evaluation body and cannot guarantee recognition or admission. 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