Classting AI Diagnostic & Adaptive Learning for Schools

Classting is operated by CT Co., Ltd., based in Gangnam-gu, Seoul, under CEO Cho Hyun-koo. Its main product, Classting AI, brings AI-driven personalised learning and assessment to primary and secondary schools and is used in more than 4,600 schools in Korea. In 2025 the company also became a publisher of AI digital textbooks.

Classting AI diagnoses each student's learning level, with a stated prediction accuracy of up to 91.5%, and offers adaptive (CAT) and fixed-form (CBT) assessments, learning maps, diagnostic reports and error management. Teachers schedule tests, duplicate them across classes and watch answers and per-question accuracy in real time. Students get an AI tutor called Jello, AI-scored Korean writing tasks with spelling feedback and up to three revisions, and gamified challenges, backed by a generative AI question bank and an education LLM built on retrieval-augmented generation.

• Level diagnosis: predicts each student's achievement level and produces diagnostic reports.
• CAT and CBT assessments: adaptive and fixed-form tests with scheduling and class duplication.
• AI tutor Jello: conversational help for students during practice.
• AI writing evaluation: scores Korean writing with spelling and spacing feedback and revisions.
• Generative question bank: AI-generated items supported by an education LLM with RAG.
• Engagement tools: learning maps, wrong-answer retry, class challenges and rankings.

• Lower secondary schools in Vietnam running start-of-year diagnostic maths tests to group students.
• Korean international schools in Vietnam using adaptive assessments and AI writing feedback.
• Education departments piloting AI-scored writing tasks for language subjects.

• Early gap detection: level diagnosis with up to 91.5% stated prediction accuracy helps teachers find students falling behind.
• Less marking: AI scores writing tasks and assessments, with real-time per-question accuracy for teachers.
• Personal pace: CAT assessments and learning maps adapt questions to each student's achievement level.
• Proven adoption: used in more than 4,600 schools.

Korea's AI digital textbook policy has accelerated adoption of diagnostic and adaptive tools in public schools, and other Asian systems are watching the model. Vietnam's education digitalisation and competency-based assessment create demand for school-level diagnostic testing, AI-scored writing and teacher dashboards.

Operated by CT Co., Ltd., 511 Seolleung-ro, Gangnam-gu, Seoul; CEO Cho Hyun-koo. Classting AI is used in 4,600+ schools nationwide; the company became an AI digital textbook publisher in 2025. Schools are offered consultations and discounted rates on request.