Located on the south-eastern edge of Bangkok, TSIS Senior School offers a comprehensive and dynamic educational experience for teenagers. The sprawling 13 rai campus provides an ideal environment for learning and growth, equipped with top-notch facilities including an assembly hall, indoor gymnasium, football field, basketball and tennis courts, a cricket ground, and a 25-meter swimming pool.

TSIS follows the British National Curriculum, an internationally recognized framework, tailored to meet the unique needs of our students and our values. Students progress through Key Stage 3 (Years 7-9), Key Stage 4 (Years 10-11, IGCSE), and Key Stage 5 (Years 12-13, AS and A Level or TSIS Diploma), ensuring a well-rounded and globally competitive education.

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