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Computer Science
American Computer Science League (ACSL)
อเมริกันคอมพิวเตอร์ไซแอนซ์ลีก (ACSL)
Register Fee
🏫 School Registration
This competition can be taken through your school.
- Already a partner exam centre? — Contact your school coordinator to register.
- Not a centre yet? Teachers can open one:
Exam Date
Dec 2026 – Apr 2027 · 4 rounds
Registration closes
TBA
Grade
Grade 3–12
Mode
Online
Four rounds — Qualifier (Dec 2026), Round 2 (Feb 2027), Round 3 (Mar 2027), Round 4 (Apr 2027). Elementary 30 mins; Junior/Intermediate/Senior 160 mins per round.
About
American Computer Science League — a multi-round computer science and programming contest. Two divisions: Elementary (Grade 3-6) and Junior / Intermediate / Senior (Grade 7-12). Four rounds from December to April, online. See the rounds below.
Categories
Awards across rounds; qualified students advance to the ACSL All-Star Finals (Aug 2027, by invitation).
Awards & Criteria
Awards across rounds; qualified students advance to the ACSL All-Star Finals (Aug 2027, by invitation).
Categories
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Past Papers
-- Choose a level --
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Exam Venues
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