Who We Are

The Teacher Development Support Organization, formerly know as The Angkor Tree Project, is the result of long term cooperation between enthusiastic Cambodian teachers and various western supporters. The project has its roots in Cambodia and is run by the people in Cambodia. The western partners give their support and help where they can.
It all started as a small initiative, providing free English classes to neighbourhood kids. Under a thatched roof, protected from the scorching heat of the tropical sun and sheltered from the sometimes heavy rain showers, kids discovered the richness and joy of acquiring English as a second language.
As demand grew, we transformed the living room into a second classroom. A second teacher joined the team. And when we had to add another classroom, not more than a few weeks later, we experienced that the real challenge was finding well-trained teachers.
We decided to provide training to our own staff, and why not, to make these training sessions also available for teachers in other NGOs. The Teacher Training Centre was born!
A professional teacher-trainer joined the young team, and suddenly things went at warp speed; the number of teachers requesting to join the training sessions increased rapidly. At the same time, we decided to add Language training for teachers to our portfolio.
The pandemic has catapulted education into the 21st century! Computers, the internet, distance learning, blended learning …it all became a necessity. IT literacy has become an absolute necessity for all those involved in education, especially teachers. Hence our IT-training programs.

Our Vision
At The Teacher Development Support Organisation, we firmly believe that every child has the fundamental right to a trained teacher. We understand that no child should be forced to beg or work, and they should be entitled to enjoy their childhood – to learn, play, make friends, and grow in a safe and happy environment.
With this core belief at the heart of our mission, we are dedicated to ensuring that all children, regardless of their circumstances or location, have access to well-trained and qualified teachers. We believe that a trained teacher can make an immense difference in a child’s life, providing them with the guidance, knowledge, and support they need to thrive academically and emotionally.
Aligned with the United Nations’ sustainable development goals, we are committed to primarily contributing to the goal of quality education. Our mission is to ensure inclusive and equitable quality education and promote lifelong learning opportunities for all children. By focusing on the importance of a trained teaching workforce, we aim to empower teachers with the necessary skills and expertise to create nurturing and impactful learning environments.
Furthermore, we recognize the significance of multilingual education as a crucial lever in providing learners with access to high-quality educational opportunities. By embracing multilingual education, we equip teachers with the tools to cater to diverse learners and foster cross-cultural understanding and communication.
Through our dedication to nurturing well-trained teachers and advocating for quality education, we envision a world where every child’s right to a trained teacher is realized, and they are provided with the education and support they deserve to reach their full potential. Together, we can transform the lives of children, shaping a brighter and more promising future for generations to come.

Our Mission
At our teacher training and learning centre in Siem Reap, Cambodia, we are dedicated to empowering educators and fostering the holistic development of children and adolescents. Our mission operates on two fronts: teacher training and a student learning centre.
Our teacher training programs focus on equipping educators with the skills and knowledge they need to excel. We provide high-quality professional development, training in innovative teaching methods and effective classroom management, as well as workshops and mentoring to foster continuous learning. Our goal is to create skilled, compassionate educators who deeply understand child development and are committed to lifelong learning themselves, inspiring a culture of continuous improvement in the education sector.
Our learning centre provides a nurturing environment for children and adolescents. We offer language classes and create a safe, inclusive space for exploration and growth. We emphasise opportunities for critical thinking and creativity, always tailoring our approach to meet individual learning needs. This centre also serves as a practical training ground, allowing new and early-career teachers to observe and practice their skills.
Throughout all our work, we prioritise a learner-centred approach to education. We believe in collaborating closely with parents and the community to create a supportive ecosystem for learning. Our focus is on holistic development, nurturing not just the intellectual growth of our students but also their social, emotional, and physical well-being.
Our goal is to create a future where all educators can provide transformative learning experiences and every child has access to a well-trained teacher, enabling them to reach their full potential. This aspiration drives everything we do at our teacher training and learning centres in Siem Reap. At the core of our mission is the fundamental belief that every child has the right to a trained teacher. Through our dedicated efforts in teacher training and student education, we strive to make this belief a reality, not just in Siem Reap, but as a model that can inspire change across Cambodia and beyond.

Our Values
Fairness and transparency: we commit to using the resources entrusted to us solely for the organisation’s objectives and to communicate regularly, timely and entirely on our activities and progress.
Service to the community: we commit to letting the interest of the local and global communities take precedence over our personal interest, even over the organisation’s interest.
Excellence and continuous improvement: we commit to permanently striving to improve the quality of our services and programs.
Our values are translated in a number of clear codes and policies.
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Our Ambition
Our ambition is to transform second language teaching across Cambodia’s entire education system. Through strategic partnerships with government institutions, we aim to strengthen the professional capacity of over 130,000 teachers, ultimately benefiting nearly 4 million students nationwide.
Building upon our established success in Siem Reap, we are developing our campus into a nationally recognised Centre of Excellence that will serve as the foundation for systematic change. Our approach focuses on working within existing structures rather than creating parallel systems, ensuring sustainable impact through progressive knowledge transfer to public sector partners.
By 2030, we will establish English Teacher Hubs in partnership with all 18 provincial Centres of Continuous Professional Development, ensuring that quality professional development reaches educators in every corner of the country. Our comprehensive approach addresses the urgent needs of Cambodia’s 13,000 contract teachers through fast-track certification programmes whilst extending our expertise to technical and vocational institutions.
Our commitment extends beyond immediate training outcomes. We are building the foundation for a self-sustaining system where Cambodian institutions will assume full ownership and operational responsibility for these programmes. Through this approach, we aim to establish enduring methodologies and standards that will continue to elevate English language instruction long after our direct involvement concludes.
This systematic transformation will position Cambodia’s education system to meet the evolving demands of economic development whilst ensuring equitable access to quality English instruction across urban and rural communities alike.

Senior Leadership

Son Nat
Executive Director
- Phone:+855 (0)12 593 431
- Email:[email protected]

Mark Desmaele
Board Chair
- Phone:010 273 960
- Email:[email protected]

Management Team

Soriya Un
Director of Operations
- Phone:(+855) 92 121 316
- Email:[email protected]

Sokly Sour
Head of Teacher Training
- Phone:+855 (0)17 404 076
- Email:[email protected]

Tola Tem
Director of Quality
- Phone:+855 (0)92 307 890
- Email:[email protected]

Team

Houk Thoeurn
Trainer Team Lead
- Phone:+855 (0)61 62 66 34
- Email:[email protected]

Lina Samrith
Teacher Team Lead
- Phone:+855 (0)98 69 68 20
- Email:[email protected]

Kimset Ray
Framework Design Lead
- Phone:(+855) 98 277 947
- Email:[email protected]

Sokhit Kan
IT Coordinator
- Phone:+855 (0)68 480 959
- Email:[email protected]

Sokseksa Eam
English Teacher
- Phone:+855 (0)93-666-787
- Email:[email protected]

Chamrong Youn
Instructional Coach
- Phone:+855 (0)96 51 77 406
- Email:[email protected]

Saroeun Nhem
Teacher Trainer
- Phone:+855 (0)77 902 002
- Email:[email protected]

Korb Kem
CLIL and STEM Project Team Lead
- Phone:+855 (0)90 426 255
- Email:[email protected]

Vandy Khan
English Teacher
- Phone:+855 (0)15243444
- Email:[email protected]

Sothea Mean
Teacher Trainer
- Phone:+855 (0) 92 280 606
- Email:[email protected]

Vanthon Chan
Teacher Trainer
- Phone:+855 (0)69 292 038
- Email:[email protected]

Thida Song
Instructional Coach
- Email:[email protected]

Sinat Kol
CPD Coordinator
- Phone:(+855) 12 923 002
- Email:[email protected]

Reaksa Sar
English Teacher
- Phone:+855 (0)78 820 702
- Email:[email protected]

Ravy Soth
Instructional Coach
- Phone:+855 (0)77 332 403
- Email:[email protected]

Samphors Heng
Instructional Coach
- Phone:(+855) 11 675 307
- Email:[email protected]

Sroem Khen
Talent Factory Manager
- Phone:(+855) 96 559 07 45
- Email:[email protected]

Vitou Tes
M&E Officer
- Phone:+855 (0)96 923 9119
- Email:[email protected]

Bunsrak Pan
Trainer Coach
- Phone:+855 (0) 96 544 1671
- Email:[email protected]

Liminh Heang
Instructional Coach
- Phone:(+855) 96 96 19 829
- Email:[email protected]

Angkea Pisith Thach
Teacher Trainer
- Phone:(+855) 10 849 297
- Email:[email protected]

Ang Bun
Project Coordinator
- Phone:(+855) 10 457 749
- Email:[email protected]

Thy Soeut
IT Support Officer
- Phone:(+855) 96 99 81 292
- Email:[email protected]

Channy Ann
Project Coordinator – BETC-PPST Project
- Phone:(+855) 15 986 008
- Email:[email protected]

Ratana Yet
Administrative Assistant
- Phone:(+855) 96 850 6897
- Email:[email protected]

Tola Phorn
Instructional Coach
- Phone:+855 (0)96 775 4751
- Email:[email protected]

Savean Yoan
HR/Finance Assistant
- Phone:+855 (0) 90 292 423
- Email:[email protected]

Meylinh Voeurng
English Teacher
- Phone:(+855) 97 710 1261
- Email:[email protected]

Ankearith Ngeav
Project Manager
- Phone:(+855) 10 335 777
- Email:[email protected]

Ly Horn Moeun
Program Manager
- Phone:(+855) 86 212 277
- Email:[email protected]

Nen Neou
Teacher Trainer
- Phone:(+855) 69 862 704
- Email:[email protected]

Sea Bou
Project Manager - BETC-PPST Project
- Phone:(+855) 12 391 549
- Email:[email protected]

Vannsy Tip
English Teacher
- Phone:+855 (0)88 786 7060
- Email:[email protected]

Meycheu Mut
English Teacher
- Phone:(+855) 92 138 723
- Email:[email protected]

Rai Moeun
Teacher Assistant
- Phone:(+855) 16 255 395
- Email:[email protected]

Chav Chinh
IT Teacher
- Phone:(+855) 99 224 336
- Email:[email protected]

Polikdanich Thou
Teacher Assistant - Librarian
- Phone:(+855) 71 35 66 356
- Email:[email protected]

Sony Noeun
English Teacher - Teacher Training Assistant
- Phone:(+855) 17 27 87 26
- Email:[email protected]

Vandy Kul
Project Coordinator – BETC-PPST Project
- Phone:(+855) 12 707 113
- Email:[email protected]

International Advisory Board

Peter Schuppli
Switzerland

David Cami
Australia

Special Advisors

Prof. Michael Goethals
Special Advisor TESOL

Belgian Foundation Board

Mark Desmaele
Chairman
- Phone:+855 (0)10 273 960
- Email:[email protected]





Reports
Fairness and transparency are at the core of our organisation. That’s why we share all operational and financial information.
Do not hesitate to contact us if you have any further inquiries.

Legal
Teacher Development Support Organisation.
Boeng Doun Pa Village – Slorkram Commune 17251
Siem Reap – Kingdom of Cambodia
NGO registration nr 10968
Contact: [email protected]
TDSO (Teacher Development Support Organisation) vzw
Donkstraat 61 – 3150 Haacht-Wespelaar
Belgium
Ond nr BE 0642 700 026
Contact: [email protected]
