Harrow International School Bangkok was established in 1998. It is the first international school established by the Harrow family outside of Harrow Public School in the UK. It has been established for more than 20 years and is the leading British school in Thailand and even Asia. The campus covers an area of more than 142,000 square meters, with a beautiful environment and unique advantages. It provides consistent British boarding and full-time education from kindergarten to pre-university for students aged 2 to 18. There are more than 1,600 students in school all year round.

Harrow International School Bangkok has a very diverse student population, most of whom are Thai, British, and come from European countries (including the Netherlands, Denmark, France, Germany, Italy, and Sweden), the United States and There are also many students from Canada and other Asian countries (China, Japan, South Korea, etc.), with a very relaxed and free cultural atmosphere.