LEX

About LEX

LEX is a academic training and mentorship organization recognized for collaborating with leading international schools, academies, and educational institutions across Asia and beyond. We specialize in various contests preparation, national and international competitions in South Korea, and advanced enrichment programs for students who aim to excel in computer science, engineering, and mathematics.

Our organization proudly serves as the regional partner for several international-level competitions in South Korea. Our mission is to operate these contests with the highest level of integrity while expanding access and awareness for students across the country.

We currently run the International Logic Olympiad, Technovation Girls Challenge, VEX Competition [Korea Open], and the American Computer Science League (ACSL) in South Korea, and we are actively exploring additional competitions for the 2026 season.

Competitions

Olympiad & Competition Programs

Logic Olympiad

International Logic Olympiad (ILO)

Global problem-solving in pure logic and reasoning.

The International Logic Olympiad gathers students worldwide to solve challenging logic puzzles and reasoning problems. Hosted in partnership with Stanford University, the contest expands access to advanced logic education, with LEX serving as the regional host for the South Korea division.

Progressive rounds with puzzle-based and proof-style challenges.
Participation from 4000+ students across 90+ countries.
Direct pathways into a Stanford-affiliated global logic community.

Update

The ILO in South Korea has transitioned to an offline, in-person testing format starting in 2026, administered and managed by LEX.

Official Website for ILO

Students solving logic puzzles in the International Logic Olympiad

Girls in STEM

Technovation South Korea

App development and entrepreneurship for girls solving real-world problems.

The Technovation Challenge is a global competition that invites girls to identify a real-world problem and develop an application and a business plan to solve it, building skills in technology, entrepreneurship, and leadership.

Top projects advance from regional judging to the global final round, where finalists present their solutions to an international panel.

Team-based app projects focused on social impact.
Guidance in ideation, UI/UX, and pitch preparation.
Entry point into the worldwide Technovation Challenge community.

Official Website for Technovation Korea

Technovation participants pitching their app projects

Computer Science

American Computer Science League (ACSL)

Foundational theory and algorithms for aspiring computer scientists.

The American Computer Science League (ACSL) builds computational thinking through written and online contests. Now in its 46th year, ACSL engages around 8,000 students worldwide in core CS concepts and problem-solving.

Offers multiple divisions—Elementary, Junior, Intermediate, and Senior.
Four seasonal contests followed by the ACSL Finals.
Supports a structured, multi-year CS competition pathway.

Update

From the 2025–2026 contest season, the ACSL in South Korea will be held at two official test locations — Jeju and Seoul — administered and managed by LEX.

Official Website for KCSL

Students participating in the American Computer Science League

Robotics

VEX Korea Open

A global hands-on robotics challenge where students design, build, and compete.

VEX is one of the world’s largest student robotics competitions, with over 1 million students across 70+ countries, and participation in South Korea continues to grow rapidly each year.

By launching the VEX Korea Open in partnership with CREATE, we are providing students with an additional high-level competition opportunity beyond the national rounds hosted by REC, opening a new pathway for teams to compete, collaborate, and challenge themselves on an international stage.

One of the world’s largest student robotics competitions.
VEX Korea Open currently features IQ and V5.
Standardized rules ensure equal competition with international teams.

NEW

The VEX Korea Open will launch for the first time in South Korea in collaboration with the CREATE organization, welcoming both local and international teams. The event is confirmed for January for the VEX IQ division, with details for the VEX V5 division to be announced soon.

Students competing in a VEX robotics match