The KOAI Round 2 written exam runs 6 hours with 80 multiple-choice + 10 written-response questions, assessing the full scope of Subjects 1-4. C2 intensively trains your stamina, speed, and accuracy for this exam format. Rather than simply reviewing knowledge, the core is exam execution skills — time allocation, written answer structure, tracking error patterns, and more.
Published: May 16, 2026 | Last updated: May 16, 2026 · Based on the KOAI 2026 guidelines
Track
Competition Intensive
KOAI Round 2 Written
Target Grade
High-school division
F1·F2·A1·A2 completed
Recommended Hours
About 13 hours
1:1 basis · varies 8–18 hours
KOAI Mapping
Round 2 Written Exam
Full range of Subjects 1–4
The goal of C2 is to train stamina, speed, and accuracy for the exam format (6 hours / 80 multiple-choice + 10 written-response / Subjects 1–4). The KOAI Round 2 Written Exam demands not only breadth of knowledge but also the operational ability to solve accurately within a limited time.
C2 is not just a knowledge review. The core is exam execution skills: time allocation, written-response answer structure, and wrong-answer pattern tracking. It is the final step in converting the knowledge built up in F1·F2·A1·A2 into actual scores on exam day.
It runs as an intensive sprint right before the KOAI Round 2 exam. We mix shortened mock exams (90 minutes–2 hours) + 1:1 reviews + weakness reinforcement, and recommend completing the full-length format (6 hours) on your own 1–2 times right before the exam. For the exact Round 2 exam schedule, check KOAI Competition Guide.
Below is the standard plan on a 1:1 basis. Depending on each student's weak subjects and score trend, some weeks are accelerated, compressed, or reinforced more deeply. The entire schedule is concentrated to align with the timing right before the KOAI Round 2 exam.
| Week | Mock Exam Topic (80 Multiple-Choice) | Written-Response Topic (10 questions) |
|---|---|---|
| 1 | Subject 1 focus (Python, classical ML, data science) | Explaining model evaluation metrics, diagnosing overfitting |
| 2 | Subject 2 focus (neural networks, DL) | Deriving backpropagation equations, rationale for optimizer choice |
| 3 | Subject 3 focus (CV) | Explaining CNN architecture, object detection vs. segmentation comparison |
| 4 | Subject 4 focus (NLP & audio) | Transformer attention mechanism, BERT vs. GPT comparison |
| 5 | Subjects 1–2 integrated | Data preprocessing + model selection scenario |
| 6 | Subjects 3–4 integrated | Multimodal scenario design |
| 7 | Full-range integration 1 | AI system design + application scenario |
| 8 | Full-range integration 2 (full simulation) | Exact full-length format |
※ Weeks are content units and actual time required varies by student. Recommended about 13 hours, ranging 8–18 hours (completing the full-length 6-hour run is separate and self-directed).
You leave with a cumulative wrong-answer log + score trend across 8 mock exams + a collection of model written-response answers. It is a self-check asset that reveals weak subjects and your improvement curve at a glance.
We mix shortened mocks (90 minutes–2 hours) + 1:1 reviews + weakness reinforcement sessions. Completing the full-length format (6 hours) is recommended on your own 1–2 times right before the exam.
Round 2 written prep isn't finished just by the number of problems you solve. C2 runs on three systems: systematically tracking wrong answers, disclosing written-response grading criteria in advance, and bridging the Korean↔English terminology gap.
① Wrong-Answer Log System
Cumulative tracking by subject and subtopic, spaced retrievalautomatically generating a review schedule
② Written-Response Grading Rubric
Korean written-response grading criteria disclosed in advance; self-grading followed by instructor re-grading
③ Korean↔English Glossary
Korean AI terminology flashcards for international-school students (e.g., "gradient descent" ↔ "경사하강법")
The design leverages international-school students' English strengths while filling in their potential weakness on the Korean written-response portion of KOAI Round 2.
C2 is the Round 2 written-exam prep course in the competition-focused track of the KOAI curriculum. For the full track structure, see KOAI Prep Curriculum Hub.
Current Course
C2. Mock Exam Bootcamp
Round 2 Written Exam Prep
Students who have completed all of F1·F2·A1·A2 and have passed Round 1 or are highly likely to pass.
The core isn't knowledge review but exam execution. We train time allocation, written-response answer structure, and wrong-answer pattern tracking.
Normally we mix shortened mocks (90 minutes–2 hours) + 1:1 reviews + weakness reinforcement, and recommend completing the full-length format (6 hours) on your own 1–2 times right before the exam.
With the Korean↔English glossary and the Korean written-response grading rubric disclosed in advance, you leverage your English strengths while filling in the Korean written-response weakness.
Check the KOAI competition guide (https://citcoding.com/competitions/koai.html). C2 runs as an intensive sprint aligned to that schedule.
We diagnose each student's weak subjects and individually design a plan for mock exams and wrong-answer logs right before the Round 2 written exam.