Official test · TCT

Thai Competency Test (TCT).

The Thai Competency Test for foreigners, arranged by the Ministry of Education of Thailand — the official certificate for the Thai language.

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Earliest free trial: Tue · 1 Dec 2026 · 7:00 PM – 8:00 PM
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The Thai Competency Test (TCT) for foreigners is arranged by the Ministry of Education of Thailand and is the official certificate for the Thai language.

It is the certificate people need to make an application to a university, to apply for a job, or to run a business. The test is held once a year in Thailand and the score is valid for two years.

The test has four sections: listening, reading, writing and speaking.

How far each level goes

Beginner

Studied for 100 hours

Elementary

Studied for 200 hours

Pre-Intermediate

Studied for 300 hours

Intermediate

Studied for 450 hours

Upper-Intermediate

Studied for 600 hours

To pass the Thai Competency Test, your proficiency needs to be at least B2, if not C1.

Exam format

The Chulalongkorn University Thai Proficiency Test for Thai as a Foreign Language (CU-TFL) is developed by the Sirindhorn Thai Language Institute at Chulalongkorn University and assesses speaking, reading, listening and writing. Applicants can choose an integrated skills assessment or skills-specific tests, and results can be used to meet admission requirements for Thai educational institutions.

Preparing for it

Our Thai teachers know the paper and the level it expects. Preparation combines the language building that carries you to B2 with realistic practice of the four sections, in a small group or one-to-one.

  • A level assessment before you start
  • Practice across listening, reading, writing and speaking
  • Feedback on the sections that carry the most marks
  • Group or private preparation at United House or online

Try before you enrol

Meet your first Thai class.

A free one-hour Thai lesson with a native teacher: join a real class, meet the teacher and see how it feels before you enrol.

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