Trinity International School

Trinity International School is a Seventh-day Adventist Christian institution that provides a holistic education focused on physical, social, intellectual, and spiritual growth. The school promotes personal values such as honesty, compassion, integrity, and respect within a diverse, multinational community. While rooted in Adventist values, the school welcomes students of all faiths and encourages them to be active, responsible members of both local and global communities.

The school offers a comprehensive K-12 curriculum based on California Common Core State Standards. The academic program includes Language Arts, Mathematics (ranging from Singapore Maths in elementary grades to AP Calculus and Statistics), Science, Social Studies, Thai Language and Culture, and Computer Skills. High school students have access to Advanced Placement (AP) subjects, including Biology, Chemistry, Physics, and Literature. Additionally, the school integrates values-based education and STEM concepts throughout its grade levels.

The school measures student success through Expected School-Wide Learning Outcomes (ESLOs), which emphasize critical thinking, academic mastery of English, and the development of Adventist values. Graduates are prepared for university entrance in Thailand and internationally, supported by the school's accreditation from the Western Association of Schools and Colleges (WASC).

The school provides an English as a Second Language (ESL) program designed to increase fluency for students with limited English ability. This program utilizes smaller class sizes and specialized instruction to prepare students for a transition into the mainstream curriculum. A dedicated learning support staff works in collaboration with teachers and parents to address the specific needs of individual students.

Trinity International School maintains an open admissions policy, allowing students to enroll at any time during the academic year. Applicants aged six and older must complete a placement test, typically the Iowa Test of Basic Skills (ITBS), to assess English proficiency, reading comprehension, and mathematics skills. Required documentation includes a birth certificate, medical certificate, previous school reports, and copies of passports for both the student and parents.

The school operates on an annual academic calendar, with the 2026-2027 schedule available for download via the school's website. The administrative office is open Monday through Friday, from 7:00 AM to 4:00 PM.

Located in the heart of Bangkok, the campus provides a learning environment equipped with smartboard technology to facilitate instruction. The school includes laboratory facilities for science activities and integrated STEM learning. Additional campus amenities include a library and a cafeteria.

Students participate in the Adventurer and Pathfinder clubs, which are departments of the Seventh-day Adventist Church focused on the cultural, social, and religious development of children and teens. The school also hosts annual "Sports Days" and maintains competitive athletic teams that participate in the Greater Bangkok Athletics Conference (GBAC). These teams compete in basketball, football, and volleyball across various age levels, including Open, U14, and U11 categories.