Mentari Group (PT Mentari Books Indonesia)

What Mentari Group (PT Mentari Books Indonesia) does

Mentari Group (PT Mentari Books Indonesia) is a privately held Indonesian integrated education solutions provider founded in January 2001 by Anna Rimba Phoa and headquartered in Jakarta Barat. The company serves Indonesian schools from kindergarten through senior high school through its 3M BIG Solutions framework — Materials (curriculum and content from 16+ international publishers), Manpower Development (teacher and leader training), and Measurement (international English assessments) — training 40,000+ educators across 8,800+ institutions annually and administering Cambridge English, OxfordAQA, and Michigan Language certifications to 10,000+ participants.

The product portfolio spans eight operating subsidiaries: ASTA Ilmu Publishing (textbooks and storybooks distributed in 24+ countries), Mentari Teachers Academy (professional development), Mentari Assessment (international certification), Mentari Digital (LMS, e-learning platforms, coding programs, and digital encyclopaedias, founded 2013), Mentari Bookstore (9 physical stores), Mentaripedia (proprietary e-commerce platform), and Pelajar Berkreasi (national student competitions including MEMO and MITC). Distribution is anchored by 20 Indonesian branch offices, 9 bookstores, 21 e-commerce accounts, and a UK office supporting ASTA's international publishing. Technology is functional digital infrastructure — LMS, curriculum content, e-commerce — with no publicly disclosed AI/ML capability.

The business model combines one-time book and materials sales, professional services for teacher training, transaction-based certification exam fees, and curriculum consulting for school transformation (Flagship, Bilingual, National Plus, SPK). Pricing is not publicly disclosed; institutional customers are acquired through direct field sales by education consultants, while individual consumers purchase through bookstores and marketplaces. Mentari Assessment holds Authorized Platinum Exam Centre status (ID280) for Cambridge Assessment English and an Exclusive Affiliate Partnership with OxfordAQA, both carrying minimum annual participation thresholds that create recurring contractual demand.

Name

Mentari Group (PT Mentari Books Indonesia)

Legal name

PT Mentari Books Indonesia

Website

https://mentarigroups.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

251–500 employees

Short description

Mentari Group (PT Mentari Books Indonesia) is an Indonesian integrated education solutions provider founded in 2001, serving 8,800+ schools and 40,000+ educators annually with international curriculum materials, teacher training, English certification, and digital learning under its 3M BIG framework.

Ownership category

akta.pro rank

Product category

K-12 Education Services

NAICS

Exam Preparation and Tutoring (611691), Educational Support Services (611710)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Language Proficiency & Admissions Testing Prep (TOEFL/IELTS/DELE/HSK, etc.) (EDAGADAE)

akta.pro secondary industries

K-12 & School-Based Language Exam Prep (AP, IB, IGCSE/A-Levels) (EDANACAE), K–12 Standardized Assessments & Benchmark Exams Prep (State tests, MAP, ISEE/SSAT) (EDANABAD)

Keywords

• Educational publishing services
• Teacher professional development
• English language certification
• Integrated education solutions
• School curriculum materials

Headquarters

HQ city

Jakarta Barat

HQ country

Indonesia

HQ region

Asia

Offices21 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Supply Chain, Infrastructure

Revenue model

1. Book and Educational Materials Sales: Mentari Group sells printed and digital educational materials, textbooks, and storybooks through its bookstore network, e-commerce platform (mentaripedia.com), and marketplace stores (Tokopedia, Shopee). Revenue comes from direct sales of curriculum-aligned content from world-class publishers to schools and individual buyers.
2. Teacher and Educator Training Programs: Mentari Teachers Academy provides continuous professional development programs including in-house training, collective training, seminars, and workshops for teachers and school leaders, charging institutions for training services.
3. English Certification and Assessment Services: As an Authorized Platinum Exam Centre for Cambridge Assessment English (ID280) and Authorized Test Centre for Michigan Language Assessment, Mentari Assessment administers international English certifications. Revenue is generated through exam registration and administration fees for Cambridge English Qualifications, MET Go! Digital, and OxfordAQA assessments.
4. Curriculum Consulting and School Management Services: Mentari Group provides school management consulting services including curriculum advisory, transformation support for schools wanting to become Flagship, Bilingual, National Plus, or SPK Schools, and ongoing professional development coordination.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Mentari Group is an integrated education solutions provider in Indonesia that delivers the 3M BIG Solutions framework (Materials, Manpower Development, Measurement) to schools. The company publishes educational textbooks and children's books (ASTA Ilmu Publishing), operates a national bookstore and e-commerce network, runs teacher and school leader training programmes (Mentari Teachers Academy), administers Cambridge English, OxfordAQA, and Michigan Language assessments (Mentari Assessment), and provides digital learning platforms (Mentari Digital).

Product overview

Mentari Group operates as an integrated education solutions provider with a multi-brand portfolio organized under the 3-M BIG Solutions framework. The core platform, Mentari Integrated Solutions, delivers Competency-Based Learning Solutions (CBLS) through three pillars: Materials (M1 - curriculum and content from world-class publishers), Manpower Development (M2 - teacher and leader training), and Measurement (M3 - international assessments and certifications). Supporting this platform are distinct sub-brands: ASTA Ilmu Publishing (educational textbook and children's book publishing distributed globally to 24+ countries), Mentari Bookstore (physical and e-commerce retail network), Mentari Teachers Academy (professional development for educators), Mentari Assessment (Cambridge English and OxfordAQA exam center), Mentari Digital (e-learning platforms and digital content), Mentaripedia (online bookstore), and Pelajar Berkreasi (student competitions). The company serves educational institutions, teachers, and students across Indonesia through 20 branch offices, 9 bookstores, and partnerships with 8 publisher houses including Cambridge University Press, Oxford University Press, and Marshall Cavendish Education.

Differentiator

Problem solved

Functional benefit

Brands

• Jambore Ibu Pertiwi: Annual national event fostering character development and love for Indonesian culture among primary school students
• MEMO (Mentari Mathematics Olympiad)
• MITC (Mentari Innovative Teaching Championship)
• MIST (Mentari Innovative Science Teaching Competition)
• ASTA Mandarin Competition
• Sekolah Literasi

Products and services

• Mentari Integrated Solutions (3M BIG) Integrated Competency-Based Learning Solutions framework for schools and educational institutions, bundling world-class curriculum materials, teacher and school leader training, and standardized English proficiency measurement under a single offering.
• Mentari Teachers Academy Professional development and training programmes for teachers and school leaders, including in-house training, collective training, seminars, workshops, and mentoring by expert trainers, focused on pedagogical, social, professional, and character competencies.
• Mentari Assessment International English language certification and assessment services administering Cambridge English Qualifications (B1 Preliminary, B2 First, C1 Advanced, C2 Proficiency), MET Go! Digital, and OxfordAQA International Qualifications for students, teachers, and professionals across Indonesia.
• ASTA Ilmu Publishing Publishing division producing educational textbooks and children's storybooks for all school levels, featuring Indonesian writers and illustrators, with global distribution to more than 24 countries.
• Mentari Digital Digital learning solutions providing curriculum-based digital content, Learning Management Systems (LMS), digital encyclopaedias, educational games, coding programmes, and digital literacy tools for Indonesian schools and students.
• Mentari Bookstore Network
• Pelajar Berkreasi Competition Programme National student competition and creative activities programme including Jambore Ibu Pertiwi (character development), Mentari Mathematics Olympiad (MEMO), Mentari Innovative Teaching Championship (MITC), and ASTA Mandarin Competition, engaging more than 2,000 students annually.
• MET Go! Digital Full online English certification exam for Indonesian students aged 11-15 covering CEFR A1-B1 levels, available in 3-skill (listening, reading, writing) or 4-skill (adding speaking) formats, delivered with virtual supervision via Zoom.

Quantifiable outcome

• 40,000+ teachers and educators trained annually across 8,800+ institutions in Indonesia
• +3 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Ten partnerships are on record, tiered core.

• Marshall Cavendish EducationcoreTechnology or IntegrationMentari Group collaborates exclusively with Marshall Cavendish Education as a content provider for Singapore-based mathematics and science curricula aligned with international standards for Indonesian schools.
• Cambridge University PresscoreTechnology or IntegrationPartnership for providing Cambridge-aligned textbooks and digital learning resources for Indonesian schools implementing international curricula.
• Oxford University PresscoreTechnology or IntegrationExclusive collaboration with Oxford University Press for providing English language teaching materials and OxfordAQA examination resources for Indonesian schools.
• SL Education (Shinglee Education)coreTechnology or IntegrationPartnership for Singapore-based curriculum content and teaching materials for Indonesian educational institutions.
• Hachette EducationcoreTechnology or IntegrationExclusive partnership with Hachette Education for providing international-standard educational materials to Indonesian schools.
• Singapore Asia PublisherscoreTechnology or IntegrationPartnership for Singapore Asia Publishers content adapted for the Indonesian education market.
• Compass PublishingcoreTechnology or IntegrationPartnership for Compass Publishing English language teaching and learning materials for Indonesian schools.
• Cambridge Assessment EnglishcoreTechnology or IntegrationMentari Assessment is an Authorized Platinum Exam Centre (ID280) for Cambridge Assessment English, administering Cambridge English Qualifications including B1 Preliminary, B2 First, C1 Advanced, and C2 Proficiency. Cambridge Assessment English is part of the University of Cambridge.
• Michigan Language AssessmentcoreTechnology or IntegrationMentari Assessment is an Authorized Test Centre for the Michigan English Test (MET) and MET Go! Digital, a global English certification developed in collaboration with Cambridge Assessment English (UK) and the University of Michigan (USA).
• OxfordAQA (Oxford University Press and AQA)coreTechnology or IntegrationMentari Assessment is an Exclusive Affiliate Partner for OxfordAQA International Qualifications, administering OxfordAQA International GCSE exams with the 9-1 grading structure. OxfordAQA is a collaboration between Oxford University Press and AQA, the UK's largest GCSE and A-level exam board.

Scale indicators11 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Pearson Education: Global education publisher and assessment operator (PTE, Pearson Edexcel). Comparable as a broad incumbent offering curriculum, English assessment, and teacher training that competes for the same international-school procurement budgets in Southeast Asia.
• Cambridge University Press: Global academic publisher and operator of Cambridge Assessment English. Comparable as both a content partner (publisher of materials Mentari distributes) and a broader incumbent whose curriculum and qualifications sit at the top of the international-school stack Mentari serves.
• ETS (Educational Testing Service): US-based operator of TOEFL and other English proficiency assessments. Comparable as an incumbent international English assessment provider whose tests compete with Cambridge and OxfordAQA exams administered through Mentari Assessment.
• Oxford University Press: Global educational publisher and parent of OxfordAQA. Comparable as an incumbent publishing partner and exam-board operator supplying content that Mentari distributes and certifications it administers in Indonesia.
• Marshall Cavendish Education: Singapore-based international curriculum publisher focused on K-12 mathematics and science. Comparable as a content partner whose materials flow through Mentari's school distribution channel and as an incumbent in the same international-curriculum niche.

Direct peers

• Zenius Education: Indonesian edtech company providing live online classes, learning videos, and test preparation for K-12 students. Comparable as a competing Indonesian education content and assessment provider targeting the same private-school segment.
• EF English First Indonesia: English-language training provider with a large Indonesian footprint of physical learning centres. Comparable as a competing English-instruction brand targeting Indonesian students, parents, and schools with certified English proficiency outcomes.
• Quipper: Edtech platform serving Indonesian schools with online learning content, teacher tools, and learning management systems. Comparable as a B2B school-focused content and training provider overlapping with Mentari Digital's school procurement motion.
• Ruangguru: Indonesia's largest K-12 edtech platform offering online tutoring, study materials, and teacher training. Directly comparable as an integrated Indonesian education solutions provider competing for the same school and student wallet, though delivered via a digital-first rather than physical-retail model.

Regional players

• Kumon Indonesia: Franchise-based supplemental math and reading program operating in Indonesia. Comparable as an after-school academic enrichment and tutoring brand competing for the same parent spending and bookstore-adjacent retail channel.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/mentarigroup
• Facebookfacebook.com/MentariGroups
• LinkedInlinkedin.com/company/mentari-group
• Instagraminstagram.com/mentarigroups

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mentari Group (PT Mentari Books Indonesia)