ETOOS
ETOOS is a Korean e-learning platform and physical academy network serving high school students preparing for the College Scholastic Ability Test (수능), offering video lectures, proprietary textbooks, mock exams, and online/offline coaching across all subjects via 40+ named instructors.
- Company typePrivate
- Founded1998
- HeadquartersSeocho, South Korea
- Headcount501–1,000
- GTM typeB2C
- OfferingDigital Commerce or Content
What ETOOS does
ETOOS (Etoos Edu Co., Ltd.) is a South Korean private education company operating an online lecture platform and a network of physical academies serving high school students preparing for the Korean College Scholastic Ability Test (수능). Founded in 1998 and headquartered in Seocho-gu, Seoul, ETOOS delivers recorded video courses across all major exam subjects — Korean, mathematics, English, social studies, sciences, Korean history, and second foreign languages — through a proprietary delivery stack that includes a custom video player (ETOOS Player with 21:9 WIDE format and 10-minute lecture-cut features), mobile study applications on iOS and Android, a teacher-driven content library (TCC) with over 3,370 videos, and an AI-powered subtitle service (AI 자막 서비스). The platform is powered by cloud infrastructure from 베스핀글로벌 with video delivery handled through 카카오엔터프라이즈.
The company operates a multi-channel revenue model spanning individual course sales (e.g., SOAR C.S at ~81,000 KRW per course), a monthly subscription plan (이투스 구독, ~59,000 KRW/month with cash rewards), proprietary textbook sales via the ETOOS Bookstore, branded mock exams (한수모의고사, 오채은 X 각인 모의고사), B2B/group training (단체구매, 기업수강), and a wholly-owned physical academy network comprising Gangnam Hyper Academy (premium track including medical school prep), Cheongsol Academy with five branches (Gangbuk, Bundang, Pyeongchon, Ilsan, Bucheon), ETOOS 247 Academy (24/7 self-study management), ETOOS 247 Dormitory, and ETOOS Dormitory Academy. Pricing is consumer-tier across courses and textbooks (~13,500-23,000 KRW for books, ~2,800 KRW shipping), while physical academy tuition is undisclosed and requires direct inquiry. Distribution combines a self-serve direct-to-consumer platform at etoos.com with instructor-led marketing through TCC videos, YouTube (@ETOOS_edu), Instagram, Naver Blog, KakaoTalk 알림톡 notifications, and a Winners Club student ambassador program.
Operationally, ETOOS runs ISMS information security certification, KG Escrow and DC 표시 designations, and has accumulated multiple industry awards including the 2026 Education Brand Award, the 2025 고등온라인부문 Award, the 2024 Marketing Excellence selection, and the 2024 Korea High Growth Enterprise Bronze Award. Leadership is led by Representative Director 정선욱. The company has no public revenue disclosure, no disclosed funding rounds, operates approximately 501-1,000 employees, and is currently positioned for the 2027 수능 cohort with active website countdown (D-143) and product launches aligned to that exam cycle.
ETOOS firmographics
Firmographics- Name
- ETOOS
- Legal name
- 이투스에듀 주식회사 (Etoos Edu Co., Ltd.)
- Website
- https://etoos.com
- Company type
- Private
- Founded year
- 1998
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- ETOOS is a Korean e-learning platform and physical academy network serving high school students preparing for the College Scholastic Ability Test (수능), offering video lectures, proprietary textbooks, mock exams, and online/offline coaching across all subjects via 40+ named instructors.
- Ownership category
- akta.pro rank
Where ETOOS is headquartered
LocationHeadquarters
- HQ city
- Seocho
- HQ country
- South Korea
- HQ region
- Asia
Offices1 record
Markets served
ETOOS business model
Business model- GTM type
- B2C
- Offering type
- Digital Commerce or Content
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure, Supply Chain
Revenue model
- Online Course Subscriptions and Sales: Individual lecture courses sold on a per-course or subscription basis (구독권). Courses range from concept completion to problem-solving to mock exam review, with prices varying by course length and type (e.g., SOAR C.S at 81,000 KRW per course). The monthly subscription plan (월요금제) offers bundled access starting from approximately 59,000 KRW per month with additional cash rewards.
- Textbook and Book Sales: Sale of textbooks and workbooks aligned with courses, including signature books, mock exams, vocabulary books, and curriculum materials (e.g., SOAR C.S textbook at 23,000 KRW, 오채은 X 각인모의고사 at 13,500 KRW). Also includes 교재패키지 (textbook packages) and 교재 PASS subscription.
- Physical Academy and Dormitory Services: Revenue from affiliated physical academy operations including 강남하이퍼학원 (Gangnam Hyper Academy), 청솔학원 (Cheongsol Academy), 이투스 기숙학원 (ETOOS Dormitory Academy), and 이투스247 academies offering in-person instruction, dormitory accommodation, and specialized programs for high-achievers and repeating students (반수생).
- Mock Exam Sales: Sale of ETOOS-developed mock exams including 전국모의고사, 아삽 모의고사, and teacher-branded exams (e.g., 오채은 X 각인모의고사). Both physical exam papers and online/explanation lecture packages are sold.
- Corporate/B2B and Group Training: B2B training services and group purchase programs for institutions, referenced as '단체구매, 기업수강, B2B 문의' on the website.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Pay-as-you-go | Individual course lecture sales with optional textbook purchase |
| Subscription | Monthly | Monthly subscription plan (월요금제/구독권) |
| Subscription | Multi-year contract | Physical academy programs (반수반, 반수성공반) |
| Unit Pricing | Pay-as-you-go | Mock exam papers and textbook packages |
Go-to-market motion1 record
Distribution channels6 records
Marketing channels8 records
ETOOS product offering
Product offeringCore offering
ETOOS operates an online video lecture platform and affiliated physical academies focused on Korean college entrance exam (수능) preparation. It sells individual lecture courses, monthly subscriptions, textbooks, mock exams, and proprietary study tools (ETOOS Player, AI subtitles, mobile apps), complemented by offline academies (Gangnam Hyper Academy, Cheongsol Academy, ETOOS Dormitory Academy, ETOOS 247) targeting high-achieving, repeating, and standard high school students.
Product overview
ETOOS is a comprehensive digital education platform offering online lecture courses, physical academies, and supplementary learning services for Korean high school students preparing for the college entrance exam (수능). The core product is the ETOOS 온라인 강의 platform providing recorded courses across all subjects (Korean, mathematics, English, social sciences, natural sciences, Korean history, second foreign languages) taught by named teachers. Supporting the online platform are physical academy brands including 이투스247 학원 (self-study management), 이투스 기숙학원 (dormitory academy), 강남하이퍼학원 (premium academy for top students/medical school prep), and 청솔학원 (personalized learning). Key digital add-ons include 한수모의고사 (EBS-linked mock exams), 이투스북 (bookstore), TCC (teacher video content), 이투스 플레이어 (video player with study tools), and mobile apps like 디-온 and 워드마스터. Recent offerings include subscription plans (이투스 구독) and reward programs (리워드 이투스).
Differentiator
Problem solved
Functional benefit
Brands
- 리워드 이투스 (Reward ETOOS): Subscription-based learning service with reward programs for consistent study habits
- 이투스북 (ETOOS Book)
- 강남하이퍼학원 (Gangnam Hyper Academy)
- 청솔학원 (Cheongsol Academy)
- Etoos 247
- 한수모의고사 (Hansu Mock Exam)
Products and services
- ETOOS Online Lecture Platform (이투스 온라인 강의)
Quantifiable outcome
- Multiple documented cases of students improving from 5th grade (5등급) to 1st grade (1등급) in one exam cycle through ETOOS courses
- +2 more outcomes
Companies that use ETOOS
Customer profileNamed customers5 records
Segments3 records
Ideal customer profiles3 records
ETOOS technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration11 records
AI capability2 records
Feature5 records
ETOOS partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- 각인북스 (Gagine Books)coreStrategic content partnership for collaborative mock exam development. ETOOS English instructor 오채은 partnered with 각인북스 to create the '오채은 X 각인모의고사' (2026 오채은 X 각인모의고사) — a high-quality mock exam combining 오채은's English exam expertise with 각인북스's question development capabilities. The exam was designed to reflect real 수능 patterns and included listening, reading comprehension, and trap-type questions with two full exam sets.
- CJ GLSminorLogistics and delivery partner handling shipping and returns for textbook and book orders placed through the ETOOS Bookstore platform.
- 티사이언티픽, KT알파, GS엠비즈 주식회사minorGifticon delivery partners for promotional event rewards and prize distribution to students participating in ETOOS events.
- 토스페이먼츠, KG에니시스, NICE페이먼츠minorMultiple payment gateway partners enabling credit card, bank transfer, virtual account, and mobile payment processing for all ETOOS transactions.
- LG U+minorSMS messaging partner for text message notifications and service alerts to ETOOS users.
- 교육지대 ( 족보닷컴)minorFor members registered before August 25, 2021, ETOOS provided service connections to 족보닷컴 (Jokbo.com) operated by 교육지대 for supplementary study material access, including referral event points and service notifications.
Scale indicators4 records
Recent moves6 records
Expansion highlights6 records
ETOOS competitors and assessment
Company assessmentDirect peers
- MegaStudy (메가스터디): Largest Korean online education platform focused on CSAT preparation, offering a comparable roster of star instructors, online lectures, mock exams, and a parallel 메가스터디학원 physical academy network — ETOOS's most direct head-to-head competitor across all subjects.
- Daesung Academy / Daesung MyMac (대성학원/대성마이맥): Long-standing Korean CSAT prep operator combining physical 대성 academies with the MyMac online lecture platform; directly comparable business model, target student (CSAT examinees), and content/proprietary instructor approach.
- Chungdahm Learning (청담러닝): Korean education provider with parallel online + offline academy footprint (iGarten, Chungdahm April, CLICK) targeting K-12 and test-prep segments; comparable integrated physical/digital model in the Korean private education market.
Emerging players
- Riiid (뤼이드): Korean AI-driven personalized learning company (Santa TOEIC, AI tutor products) targeting the same Korean K-12 and adult learner base with adaptive AI instruction — a technology-substitute competitor that could pressure ETOOS's standardized lecture model.
- Amoogi (아모지): Korean AI-powered personalized K-12 learning platform; an emerging category competitor demonstrating the AI-tutor direction that could disrupt ETOOS's standardized lecture model for non-top-tier students.
- Snow Owl (스노우올): Korean edtech platform with AI-adaptive learning products for K-12 and test prep, representing the AI-personalization wave competing with traditional lecture-based offerings from ETOOS.
Broad incumbents
- EBS (Educational Broadcasting System): Korea's public broadcaster and dominant free CSAT-lecture provider (EBSi); ETOOS explicitly integrates EBS-linked 한수 mock exams and competes against EBS's free online lectures for the same student cohort.
- Naver Edu / Naver Clipa: Naver's broader K-12 educational content platform and AI study tools offer free and freemium test-prep content to the same Korean student base, positioning Naver as a deep-pocketed incumbent adjacent to ETOOS's core market.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
ETOOS social profiles
Digital presenceETOOS compliance and trust
Trust signalCompliance1 record
ETOOS financial estimates
Financial estimateRevenue estimate
Valuation estimate
ETOOS leadership team
Management profileNumber of profiles
Profiles1 record
ETOOS subsidiaries and ownership
Company hierarchySubsidiaries6 records
ETOOS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ETOOS M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ETOOS
What does ETOOS do?
ETOOS operates an online video lecture platform and affiliated physical academies focused on Korean college entrance exam (수능) preparation. It sells individual lecture courses, monthly subscriptions, textbooks, mock exams, and proprietary study tools (ETOOS Player, AI subtitles, mobile apps), complemented by offline academies (Gangnam Hyper Academy, Cheongsol Academy, ETOOS Dormitory Academy, ETOOS 247) targeting high-achieving, repeating, and standard high school students.
Is ETOOS a public or private company?
ETOOS is a private company. It is classified as unknown and is currently operating.
When was ETOOS founded?
ETOOS was founded in 1998. It employs 501 to 1,000 people.
Where is ETOOS based?
ETOOS is headquartered in Seocho, South Korea, in the Asia region.
How does ETOOS make money?
Five revenue lines are on record. Online Course Subscriptions and Sales are the primary driver. The others are textbook and Book Sales, physical Academy and Dormitory Services, mock Exam Sales and corporate/B2B and Group Training.
Who are ETOOS's main competitors?
Direct peers on record are MegaStudy (메가스터디), Daesung Academy / Daesung MyMac (대성학원/대성마이맥) and Chungdahm Learning (청담러닝). Emerging players are Riiid (뤼이드), Amoogi (아모지) and Snow Owl (스노우올). Broad incumbents are EBS (Educational Broadcasting System) and Naver Edu / Naver Clipa.
Does ETOOS have an API?
No public API is recorded for ETOOS.