Overview
Phak Kor (ภาค ก), Part A of Thailand's civil service examination, is run by the Office of the Civil Service Commission (OCSC). Passing Part A is the general entry gate for most Thai government civil-service positions: candidates must hold a Part A pass before they can sit the position-specific Part B exam and the Part C interview for an actual government post.
Who can apply
Candidates need an education level matching the civil-service grade they are applying for (such as a bachelor's or master's degree), since OCSC runs Part A at different levels tied to qualification level.
Exam pattern
Part A is a general-aptitude, multiple-choice test covering Thai language ability, numerical and mathematical reasoning, logical reasoning, and general knowledge of laws, regulations, and current affairs relevant to Thai civil service.
Marking and results
A Part A pass is valid for a set period and can be used to apply to the position-specific Part B exam at multiple government agencies during that validity window, rather than needing to be retaken for every application.
How to apply
Register for an OCSC Part A sitting through the Commission's official application system; OCSC announces sittings and application windows separately for each qualification level.
Preparation tips
Since a Part A pass can be reused across multiple job applications, treat it as a prerequisite to clear early, then focus later preparation on the position-specific Part B content for the roles you actually want.
Is Part A enough to get a government job in Thailand?
No. Passing Part A only makes you eligible to sit Part B (position-specific knowledge) and Part C (interview) for a specific post.
How long is a Part A pass valid?
It is valid for a set period during which it can be used for multiple Part B applications; check OCSC's current rules for the exact validity period.