# TDSO \- Teacher Development Support Organisation: Cambodia's Centre of Competence for Teacher Professional Development > Cambodia's reference centre for in\-service teacher development\. Training 1,000\+ teachers annually with evidence\-based methodology Generated by Yoast SEO v28.5, this is an llms.txt file, meant for consumption by LLMs. ## Pages - [Home](https://tdso.ngo/) - [Impact](https://tdso.ngo/impact/) - [TPA](https://tdso.ngo/our-approach/tpa/) - [CLT](https://tdso.ngo/our-approach/clt/) - [Our approach](https://tdso.ngo/our-approach/) ## Posts - [We Are Hiring: Data Manager](https://tdso.ngo/we-are-hiring-data-manager/): TDSO is hiring a Data Manager to support the accurate and effective management of programme data across our teacher development programmes\. The role will maintain reliable datasets, conduct data cleaning and validation, produce reports and data extracts, and support evidence\-based programme monitoring and decision\-making\. We are looking for a detail\-oriented professional with strong data management, spreadsheet and analytical skills, and experience working with databases or related systems\. The position is based in Siem Reap and is offered full\-time\. - [Spray and Pray : Why teacher training so often fails to reach the classroom](https://tdso.ngo/spray-and-pray-why-teacher-training-so-often-fails-to-reach-the-classroom/): "This programme will reach 30,000 teachers\." It is the kind of number that wins funding\. It is also, very often, a projection wearing the clothes of a result\. Most teacher training in low\-income education systems runs on the cascade model: train a small group centrally, and rely on them to train the next group, who train the next\. It is cheap, fast, and easy to report\. It reaches enormous numbers on paper\. And it usually does not change what happens in the classroom\. The research is remarkably consistent on why\. At each hand\-off down the chain, the content thins out\. The people asked to train their peers were prepared to teach children, not to train adults\. And nowhere in the model is there any follow\-up in the actual classroom, which is the one thing that changes how a teacher teaches\. One review named the mechanism perfectly: "spray and pray\." Spray information at as many people as possible, and pray something sticks\. Here is the arithmetic laid bare\. In one documented cascade, twelve trained facilitators were recorded as eventually reaching 8,200 people\. The headline is 8,200\. The number actually prepared with any depth is twelve\. Everything in between rests on transfer surviving relay after relay, unfunded and unobserved\. The distinction that matters is simple: A cascade spreads information and counts who was reached\. What changes a classroom is ongoing guided practice: a teacher working at a specific skill, in their own room, with someone watching and helping, until it holds\. The two look alike on a report\. They cost very differently to produce\. Only one of them reaches a child\. At TDSO we build the second kind\. We prepare teacher trainers over years, not workshops, and we build that capability into the institutions that are already responsible for training Cambodia's teachers, so it stays after we leave\. We plan ourselves out of the work rather than create a dependency on us\. - [From Cambodian Classrooms to Lao Classrooms: A Cross\-Border Teacher Development Journey](https://tdso.ngo/from-cambodian-classrooms-to-lao-classrooms-a-cross-border-teacher-development-journey/): TDSO welcomes Mr\. Vilasai Thammavong, Director of LAOCYDA, his assistant, and two Lao trainers to Siem Reap for an intensive four\-week Training of Trainers programme\. Through classroom observations, practical training and engagement with TDSO trainers, the Lao trainers will experience TDSO’s approach to teacher development in practice\. The programme provides an opportunity to learn, reflect and explore how these approaches can be adapted to the Lao context, supporting the development of effective teacher training in Laos\. - [Welcome Mr Kimchhy Sour to the TDSO Team](https://tdso.ngo/welcome-mr-kimchhy-sour-to-the-tdso-team/): TDSO is delighted to welcome Mr Kimchhy Sour to the team as our new English Language Trainer\. We are pleased to have him join our growing team and look forward to the experience, ideas and skills he will bring to our work\. His contribution will support our commitment to strengthening English language teaching and professional development\. We wish Kimchhy every success in his new role and look forward to working together to create meaningful learning opportunities for teachers and communities across Cambodia\. - [Teaching Students with Different Abilities: Practical Strategies](https://tdso.ngo/teaching-students-with-different-abilities-practical-strategies/): How can teachers effectively support learners with different levels, abilities, and learning styles in the same language classroom? Join Ian Walkinshaw, Senior Lecturer at Griffith University, Brisbane, Australia, for a practical online workshop on differentiated instruction\. Participants will explore practical strategies for identifying learner needs, adapting content and materials, working with mixed\-ability groups, and responding to different learning styles\. The session will provide teachers with practical approaches they can apply directly in their language classrooms to support more effective and inclusive learning\. ## Categories - [News](https://tdso.ngo/category/news/) - [Events](https://tdso.ngo/category/events/) - [Perspectives](https://tdso.ngo/category/perspectives/) - [newsletter](https://tdso.ngo/category/newsletter/) ## Tags - [Greenspots \- Climate resistant schools in Cambodia](https://tdso.ngo/tag/greenspots-climate-resistant-schools-in-cambodia/) ## Optional - [Sitemap index](https://tdso.ngo/sitemap_index.xml)