Education Development Trust (EDT)

St Andrews International School, Green Valley is a fully accredited Gold level school by EDT (Education Development Trust). In 2015 Green Valley was the 1st and only school in the Eastern Seaboard to be awarded the 1st tier level of accreditation making us a Gold Level school and to achieve an 'Outstanding' mark in all the assessment criteria. In 2018 and for our latest accreditation (the next accreditation will take place in 2022), we were very proud to achieve the Gold level for a 2nd time with an 'Outstanding' mark AGAIN in all the assessment criteria. We are extremely proud to have achieved the highest accolade for our accreditation for two successive inspections and strive to keep doing so in the future.

EDT are one of only four organisations who are authorised by the Thai Education Ministry to carry out international accreditations in Thailand. It is a UK based organisation working throughout the UK and internationally in 40 countries. They provide education consultancy, inspection and employ more than 2,500 staff worldwide. In the UK, they inspect a third of all UK schools on behalf of OFSTED.

The EDT International Schools Quality Mark (ISQM), accreditation validates the quality of our education provision against global standards. To receive the EDT International Schools Quality Mark our school was assessed against the following standards: 

  • The standards that students reach in their work and the progress they make (Outstanding)
  • Students' personal development (Outstanding)
  • Teaching and learning (Outstanding)
  • The curriculum (Outstanding)
  • Accommodation and resources (Outstanding)
  • How well the school cares for and supports its students (Outstanding)
  • Partnership with the community (Outstanding)
  • Leadership, management and governance (Outstanding)

Please find below some of the highlights from our EDT (Formerly CfBT) report from 2015:


“Most students make outstanding progress in nearly every key stage and reach levels of attainment in the core subjects that are above those expected for their age.”


“The attendance, behavior and attitudes of students towards their school, their learning and other people are outstanding and make a significant contribution to their academic achievement.”


“Standards of attainment achieved by students in their IGSCE examinations are high. In 2014, 46% reached the top grades of A* and A.”


“The quality of leadership and management throughout the school is outstanding. This has resulted in higher levels of academic achievement and personal development by students who are confident, independent, lifelong learners.”


“The outstanding curriculum is extensively enriched and provides worthwhile learning experiences.”


“The school’s provision for students’ welfare, health and safety is outstanding. Students know how to keep themselves safe and healthy and to whom they can turn if they ever need help.”


“The quality of teaching and learning is outstanding. Consequently, students make rapid and sustained progress in lessons which, engage and motivate them to succeed.”


“The partnership between the school, its parents and community is outstanding. This results in well-informed parents and an active community which support the academic and personal development of students exceptionally well.”

International Baccalaureate (IB) World School

St. Andrews International School, Green Valley is a fully authorized IBO World School. We offer the IB Primary Years Programme and the two-year IB Diploma Programme as our pre-university curriculum with students aged from 16 to 18 years of age.

The IBO has 4998 programmes being offered worldwide, in 3,967 schools, in 147 countries all around the world. Due to the broad and rigorous nature of the IB Diploma programme it has now become the preferred qualification by many Directors of Admissions for University courses worldwide.


All St. Andrews Schools are licensed by the Thai Ministry of Education and accredited through ONESQA (Sor mor Sor) the international schools inspection body. 

Affiliations and Membership


St. Andrews Green Valley is an active member of the Federation of British International Schools in Asia (FOBISIA). FOBISIA currently has a membership of 37 of the leading British-style schools in the region and provides a wide range of activities for students and teachers.

Council of International Schools

The Council of International Schools (CIS) is a not-for-profit membership association of schools and post-secondary institutions. CIS defines standards and provides services that support the continuous improvement of international education.

International Schools of Thailand

The International Schools Association of Thailand (ISAT) was established in 1994. Its principal purpose is to act as a link between international schools which are members of ISAT on the one hand and the Ministry of Education, in particular the Office of the Private Education Commission, on the other.

Cambridge IGCSE

Cambridge IGCSE is the world’s most popular international qualification for 14 to 16 year olds, and Green Valley is authorised to be a Cambridge IGCSE examination centre.  We offer the Cambridge IGCSE examination course to our students in Year 10 and 11. It is recognised by leading universities and employers worldwide, and is an international passport to progression and success.