This page was last updated on August 1, 2023

What we do

Located in the vibrant city of Siem Reap, TDSO is a leading teacher training centre dedicated to empowering educators and transforming education in Cambodia. We are passionate about providing high-quality professional development opportunities for teachers, equipping them with the knowledge and skills necessary to excel in their classrooms.

At TDSO, we believe teachers are the driving force behind educational growth and positive societal change. Our mission is to support and empower these dedicated professionals by offering a range of comprehensive training programs designed to enhance their teaching practices, foster innovation, and promote student-centred learning.

Why choose TDSO?

  1. Expert Trainers: Our team of experienced trainers consists of seasoned educators who bring a wealth of knowledge and expertise to our training programs. They are committed to providing practical and research-based strategies that can be implemented effectively in the classroom.
  1. Customized Workshops: We understand that every teacher has unique needs and challenges. Therefore, we offer customized workshops and professional development sessions tailored to address specific areas of improvement identified by individual teachers or schools. This personalized approach ensures that our training is relevant and impactful.
  1. Innovative Approaches: Education constantly evolves, and we strive to stay ahead of the curve. TDSO is dedicated to introducing innovative teaching approaches, incorporating technology, and fostering critical thinking and creativity among teachers and students alike.
  1. Collaborative Community: TDSO fosters a collaborative and supportive community of educators. Through networking events, peer collaboration opportunities, and online forums, we encourage teachers to connect, share best practices, and learn from one another.

  2. Sustainable Impact: We are committed to making a lasting impact on education in Cambodia. TDSO not only equips teachers with essential skills but also provides ongoing support and resources to ensure their growth’s sustainability and the education system’s positive transformation.

Whether you are a new teacher seeking foundational training or an experienced educator looking to enhance your teaching practices, TDSO supports your professional development journey. Together, let’s shape the future of education and inspire generations to come.

Contact us now to learn more about our upcoming training programs and workshops and how you can join the TDSO community. We look forward to embarking on this transformative journey with you!

Our Programs

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Teacher Training Centre

Teacher Training for Public Schools

Public primary schools are deemed to teach English for 2 hours a week to all students, starting from grade 4. In the near future this will be increased to at least 5 hours a week, starting from grade 1. That affects, in the province of Siem Reap only, a population of around 200.000 students Unfortunately, many schools cannot live up to this expectation, as there are hardly teachers able to speak English, not even to mention the ability to teach it.

The province of Siem Reap has over 500 primary schools, counting for over 3.000 staff. We train one (for large schools two, tree or even more) teachers per school. In very small rural schools we work with school clusters, where one teacher teaches English in all schools in that particular cluster. The content of the training is adapted to meet the needs of public school teachers : they are tied to a curriculum, often teach large classes and have few technical resources.

For secondary school teachers we offer coaching to help them implementing CLIL (content and language integrated learning): STEM (Science, Technology, Engineering and Mathematics) in an innovative way.

We train over 175 public school teachers every year.

ITTSR: Interactive Teacher Training

ITTSR, Interactive Teacher Training Siem Reap is designed for early-career teachers of English in informal schools and NGOs.

It is widespread in Cambodia that young people, after graduation from secondary school, come to town to study or find a job. Many of them, providing they know a few words of English, start teaching English in all kinds of NGO’s and community organisations. Unfortunately, none of them had any training.

Even those who go to universities to obtain a bachelor in English Literature or TESOL are unprepared for teaching. A TESOL bachelors degree, for example, is spread over five years, and it is not before starting year four that students get their first pedagogy courses.
But, no job means no income, and no income means no university! Parents are unable to afford further education.

The Interactive Teacher Training Program provides these young teachers with basic training on how to teach English. The course lasts one semester (on Saturdays/or Sunday mornings, each session is 4 hours) and covers 15 topics. The course is interactive, with a large variation of activities, reflection and observation tasks, roll-plays, discussions a.s.o.

To a large extent, these teachers will promote to ‘contract-teachers’ in Public Schools.

We train over 60  teachers in informal schools every year

Advanced Teacher Training

Language is the foundation of communication, and English, as a global language, holds immense significance in today’s interconnected world. Proficiency in English opens doors to diverse opportunities, enabling individuals to broaden their horizons and access a wealth of knowledge and resources. Recognizing the pivotal role of English Language Training (ELT) in personal and professional development, a unique program has emerged to empower educational institutions, NGOs, informal organizations, and public schools to excel in the realm of ELT.
This transformative initiative fosters collaboration and knowledge-sharing through comprehensive training sessions, collaborative workshops, assessments, auditing, and coaching. By drawing upon the wealth of expertise in school and course management, teacher coaching, student assessment, and other pertinent aspects of successful ELT, this program seeks to create a ripple effect that will benefit students, teachers, and leaders alike.

Headteachers, teacher coaches, instructional leaders, NGO leaders and more experienced teachers form the heart of the target group for this program. These educational visionaries play a pivotal role in shaping the trajectory of their institutions, and their proficiency in ELT methodologies directly impacts the learning outcomes of their students. By equipping this group with cutting-edge strategies and tools, the program aims to create a domino effect where enhanced ELT practices filter down to classrooms, positively influencing the educational journey of countless learners.

More than 120 teachers join our advanced workshops every year.

Teacher Learning Community

The Teacher Learning Community (TLC) is a dynamic platform designed to empower educators on their journey towards excellence in teaching. At the heart of our TLC is the belief that collaborative engagement and continuous reflection are the keys to unlocking the full potential of educators.

As passionate advocates for the art of teaching, we understand that the path to professional growth is not a solitary one. That’s why we bring together a vibrant community of teachers, all alumni from our training programs, to foster an environment of support and mutual inspiration. Here, you will find a space where experience is exchanged, ideas are shared, and innovative teaching practices are cultivated.

Our TLC offers a wealth of opportunities for educators to connect, collaborate, and explore diverse perspectives. From thought-provoking discussions to engaging workshops, we curate enriching experiences that will ignite your passion for teaching and enhance your pedagogical prowess.

Join us on this transformative journey of learning, as we stand united in our dedication to nurturing the educators of today and empowering the leaders of tomorrow. Together, let’s shape the future of education, one inspiring idea at a time.

More than 500 teachers  meet and work together

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English For Teachers

We understand the vital role that language proficiency plays in effective teaching, and we are committed to empowering educators to become confident and proficient users of the English language. In Cambodia, most English language teachers speak English as a second or third language, and while English teaching is compulsory in all primary and secondary schools, many teachers struggle to meet the minimum language standards.

English for Teachers is a comprehensive program that goes beyond general English language learning and focuses specifically on English for Teaching. Our approach revolves around three essential functional areas for teachers: classroom management, understanding and effectively communicating lesson content, and assessing students while providing constructive feedback.

At the core of our program lies the innovative concept of the ‘Flipped Classroom.’ Trainees independently work through lesson content, including grammar, vocabulary, and other essential aspects, outside the classroom. This enables us to transform the in-class time into a dynamic and interactive learning environment where our expert coaches guide students to apply concepts creatively and actively engage with the subject matter.

Our program caters to teachers at four different levels of language proficiency: pre-intermediate, intermediate, upper-intermediate, and advanced. Regardless of your current proficiency, we have a program that suits your needs and helps you progress to the next level of English language competence.

Each program lasts for a duration of six months, providing ample time for gradual and effective learning. Our structured curriculum, experienced instructors, and engaging learning materials ensure that you not only become a proficient English speaker but also a skilled English teacher capable of inspiring and nurturing young minds.

We serve 60 teachers/trainees per semester

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IT for Teachers

In today’s fast-paced world, technology plays a pivotal role in shaping education. As a result, teachers must possess essential ICT competencies to enhance their professional capacities and deliver effective learning experiences for their students. Our program is designed to equip teachers with the necessary digital skills and empower them to utilize ICT tools and devices confidently in their classrooms.

Gone are the days when digital skills merely revolved around word processing and spreadsheets. In the 21st century, teachers need a diverse set of competencies that encompass cloud storage and sharing solutions, social media integration, web editing, image manipulation, presentation software mastery, and multimedia proficiency.

Our online Basic IT for Teachers courses are crafted to cater to the unique needs of educators. The program offers flexibility, allowing every trainee to participate at their own pace, making it convenient for busy teaching professionals to fit learning into their schedules seamlessly.

The curriculum covers the most widely-used desktop applications, including Word, Excel, PowerPoint, Teams, Lists, ToDo, Forms, Outlook, OneDrive, and more. Our comprehensive approach ensures that teachers gain hands-on experience with the tools that have become integral to modern-day classrooms.

At the conclusion of each module, a test is provided to assess participants’ understanding and proficiency. Those who pass the assessments can proudly consider themselves proficient users, equipped to harness the full potential of ICT resources in their teaching practices.

By sharpening their ICT skills, teachers become more dynamic and effective educators, enriching the learning experiences of their students and preparing them for the digital world ahead.

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Language Training Centre

English as a Foreign Language

Our Language Center is a nurturing space where young minds embark on an exciting journey of learning English. Our dedicated team is passionate about imparting language skills to primary and secondary school children, laying a strong foundation for their academic and personal growth.

But our Language Center is more than just a language school; it’s a multifaceted hub of educational excellence. Aspiring teachers from our teacher training programs benefit from hands-on experience here, observing expert educators in action and honing their teaching abilities through practical practice sessions.

Innovation thrives within our walls, as we use this space to pilot and validate cutting-edge projects and teaching approaches. Our commitment to research and evaluation ensures that we implement only the most effective methodologies in our classrooms, enhancing the learning experience for every student.

Our Language Center is a dynamic resource hub, enriched with modern teaching materials and state-of-the-art technologies, creating an engaging and interactive learning environment for all. Moreover, we firmly believe in the power of community collaboration, fostering partnerships with local schools, organizations, and language learning centers to create a collective impact on education.

Our Language Center is where language comes to life, educators find their calling, and students thrive in a world of endless possibilities. Together, we shape a brighter future, one word at a time.

We serve 300 students daily in our learning centre.

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English for Partner Organisations

In our English Language Center, we believe in empowering organizations and NGOs to excel in their core missions while we take care of their English language needs. We understand that many organizations may not have the resources or expertise to specialize in teaching English while focusing on their primary areas, such as vocational training or community development.

At our centre, we offer tailored English courses designed to cater to the unique requirements of these organizations. Our experienced educators bring their passion for teaching to create engaging and effective language programs that seamlessly integrate with their existing activities.

But our commitment goes beyond just language instruction to other organizations. By doing this, we also provide a nurturing environment for young and exceptionally talented teachers to flourish. We empower them to become exemplary educators and leaders in their field through meticulous coaching and professional development.

We strongly believe that joining forces can forge a stronger and more connected future for all.


Amongst our partner organizations : Spoons Cambodia, Bayon Education and CRST

We serve over 150 students in our partner organizations

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Language Centre Projects

Centre for Speech Excellence

The Centre for Speech Excellence, setup in cooperation with Vives, university for Applied Sciences, department of Speech therapy, specialises in pronunciation, speaking in public, voice training and remediation of voice problems.

Everyone is familiar with the jokes about Asian students ordering "flied lice" and, in fact, such pronunciation problems persist today. To a large extent, Cambodian students have problems with pronunciation and stress. This is primarily since their native tongue may not have that particular sound (their native grammar may even prohibit making that sound) and the absence of "consonant clusters" (strings of consonants such as s-t-r in the word strong).

We help teachers improving their own pronunciation and stress patterns, and coach them when it's their turn to be in front of a classroom. We provide voice-training and teach them how to identify and remediate common problems in their classrooms.

Language Buddies

Language Buddies

Language Buddies is a transformative program connecting student teachers from Cambodia with partners from the North for engaging online conversations. Over 20 to 25 weeks (1 semester), participants engage in one-on-one video calls via platforms like Zoom, Teams, Skype, Messenger, and Telegram.
The program is designed to facilitate language skill development for both the 'mentees' (teachers in training from the South) and 'mentors' (interlocutors from the North). With pre-determined themes, participants receive a 'Target Language Sheet' with vocabulary lists to use during conversations. Mentors also receive a questionnaire to enhance conversation content.
The conversations aim to bolster the mentees' language abilities by expanding their vocabulary, building confidence in speaking a foreign language, and refining pronunciation. Simultaneously, mentors gain a better understanding of the living situation in the South and foster intercultural cooperation.
After a successful first season, exceeding expectations with over 75 participating 'couples,' the impact was remarkable as participants' language skills improved beyond predictions. Building on last year's experience, minor adjustments have been made, such as simplified Target Language Sheets and tighter organization for follow-ups.
An extensive evaluation meeting with Cambodian mentees from the previous year led to a well-planned follow-up process for some. This trajectory may involve a higher-level second series of interviews or specialized interviews with mentors possessing specific profiles, like speech therapists, to address targeted aspects.


English Library

Welcome to our all-inclusive library! For teachers, our online collection offers hundreds of pedagogical and English language works to support professional growth and classroom success. Students and teachers alike will find a wide variety of fiction and non-fiction books to satisfy their curiosity and interest. We are committed to fostering vibrant learning communities and invite you to explore the endless knowledge and inspiration that awaits in our virtual corridors. Embark on a journey of enlightenment and immerse yourself in the wonders of the library where imagination and wisdom intertwine. Welcome to the world of endless possibilities! 

Dear (Drop Everything And Read)

DEAR stands for ‘Drop Everything And Read’. The project wants to achieve a higher reading comprehension level for secondary education students. The most direct and almost automatic effect of regular (story) reading (of texts at their level of learning English) is acquisition of vocabulary (the learner’s mental dictionary), which counts for a rough 95% of all foreign language communication. At the same time, the project aims to improve the students’ speaking skills and raise their confidence when speaking for a group.

Quality Assurance

A robust QA system

As an organization that promotes educational excellence, we have invested significant resources in establishing a solid quality assessment system.

This information helps us improve our curriculum, teaching methods and student support services to provide a truly enriching learning experience.

This transparency allows us to assess our progress and provide our stakeholders, including students, parents, donors and partner organizations, with valuable insight into the quality of our educational services.
Regular monitoring and evaluation help us identify areas where we excel and where we can improve our practices.

Analyzing evaluation data can provide valuable feedback on the effectiveness of teaching methods, curriculum design and overall program structure.

This feedback allows us to make data-driven decisions, implement targeted interventions and adjust strategies to ensure our students’ best possible educational outcomes.

Monitoring and assessment are essential to the quality assessment system, allowing us to track student and teacher performance and progress.

Continuous assessment allows us to monitor individual student development, identify learning gaps and tailor instruction to meet specific needs.

In addition, regular performance evaluations of teachers identify their strengths and areas needing further professional development, ultimately ensuring the delivery of quality education.

By analyzing evaluation results and feedback from students, teachers, and other stakeholders, we can identify areas where the program is doing well and areas that need improvement.

This process allows us to make informed decisions, increase the effectiveness of our programs, and ultimately take targeted action to ensure that our students have the best possible educational experience.

Involving students, teachers, parents and other stakeholders in the assessment process fosters a supportive environment focused on continuous improvement.

A robust quality assessment system is integral to his TDSO commitment to educational excellence.

Through monitoring and evaluation, we continually strive to improve our programs, support student learning, and ensure the best performance of our teachers.

This systematic approach allows us to measure our progress, meet challenges effectively, and fulfil our mission of providing excellent English language teaching and teacher training.

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Corporate Social Responsibility

Outreach Programme​

TDSO Outreach program

Although it’s not at the core of our mission, an organisation that works in a country like Cambodia can’t ignore that sometimes people in our immediate surroundings have an imminent need for support. Covid-19 made this more pressing, but even after the pandemic, the needs remain enormous.

At first, we thought of distributing food packages to the neediest families. After some reflection, the team concluded that this might not be the best solution: it requires a lot of organisation and workforce, on a larger scale, it disrupts the local markets, and the beneficiaries are reduced to beggars, on who’s behalves others decide what, when en how they should eat. It’s not that there is not enough food on the market; it’s not that these families don’t know how to manage their budgets; it’s not that they don’t know how to prepare a healthy meal for their kids… They only lost their jobs and income due to the crisis in tourism and the lack of social benefits.

We try to respect people’s autonomy and dignity. So we provide them with paid work. Paid work, be it on a temporary and part-time basis, provides people with an income to spend freely and without paternalistic supervision or interference. The jobs provided are beneficial to our organisation (gardening, minor maintenance …) or the community (removing trash from the neighbourhood, ..)

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