TSI International School

TSI International School was founded in 1985 as Thai Sikh International School, which makes it one of Bangkok's older international schools. It is a non-profit school partly supported by the Thai Sikh Foundation. The main Bearing Campus is on Thang Rotfai Sai Kao Road in Samrong Nuea, Samut Prakan, just south-east of Bangkok, with a shuttle from Bearing BTS station. It covers about 30 rai and takes children from Pre-Nursery to Year 13. Its new primary school building opened there in August 2025. A second campus on Prachathipok Road at Wongwian Yai, on the Thonburi side, teaches children aged 2 to 11 and was fully renovated in 2025.

TSI follows the English National Curriculum through the early years and primary. Students take Cambridge IGCSE courses in Years 10 and 11, and in the sixth form they choose between AS and A Levels or a school TSI Diploma. Primary children can study Punjabi, Hindi or Mandarin alongside Thai, and English as an Additional Language support is available. The school was accredited by the Council of International Schools (CIS) in June 2026. The community is small (around 350 students) and diverse, with over 30 nationalities. Students of Indian heritage, including the Sikh community, are a significant group but no longer the majority.

The Bearing Campus has an assembly hall, an indoor gymnasium, a 25m swimming pool, a 400m running track, a cricket ground, playing fields and courts for basketball, tennis and volleyball. The Wongwian Yai campus has its own swimming pools, an air-conditioned gym, a library, STEAM and art rooms and basement drop-off parking. Fees are moderate for a British-curriculum school. For 2026–27, annual tuition is THB 260,000 for Nursery, THB 330,000 for Years 1 to 8 and about THB 293,000 to 301,000 for Years 9 to 13. A general fee of THB 46,500 a year applies up to Year 8, covering food, resources and trips, and there is a one-time admission fee.