Centurion International School

The Founding of CISB

Centurion International School Bangkok has a concise but meaningful founding history that reflects the deliberate ambition of its school board to fill a perceived gap in Bangkok's international education landscape: affordable, quality British-curriculum schooling.

2018: The Vision Takes Shape

The CISB school board began formal planning in 2018. Their target was clear — to create an international school that would offer genuine quality without the prohibitive fee structures of Bangkok's established international schools. The founders identified that many families — both expatriate and local Thai — were priced out of quality international education despite having the desire and partial means to access it.

2019: Securing Ministry of Education Approval

After approximately 18 months of planning, regulatory preparation, and facility development, CISB secured a full licence from Thailand's Ministry of Education in 2019. This governmental approval was a critical milestone, as operating as a licensed school in Thailand requires meeting specific standards for curriculum, facilities, teacher qualifications, and governance structures.

2020: Opening the Doors

CISB opened its initial Early Years programme in 2020, welcoming the youngest cohort of students to its 7-rai (approximately 11,200 sqm) campus in the Suan Luang district of Bangkok. The opening in 2020 — coinciding with the global COVID-19 pandemic period — reflects the founders' commitment to their vision despite challenging external circumstances.

Progressive Growth

Following the initial Early Years opening, CISB progressively added year groups through the primary and lower secondary stages, eventually offering Foundation through Year 8. The school has continued to invest in its facilities, adding sports infrastructure including an artificial turf football field and basketball courts, and expanding its teaching staff.

Current Standing

As of the most recent data available, CISB has grown to approximately 142 students taught by at least 15 qualified teachers, representing a student-teacher ratio of approximately 9:1. The school continues to operate under its founding vision, with plans for further growth.

Education as a Right

Centurion International School Bangkok (CISB) was founded on a deliberately democratic educational philosophy: "Quality education is not a privilege, it is a right every child and parent should expect." This mission statement, prominently displayed on the school's official website, is not merely aspirational marketing copy — it directly shaped decisions about pricing, curriculum design, and admissions accessibility.

Affordable British Curriculum

Unlike many Bangkok international schools that charge premium fees exceeding 500,000 THB per year, CISB's annual tuition ranges from 146,000 to 167,000 THB depending on year group. This deliberate affordability is a structural expression of the school's founding philosophy, making a British National Curriculum education available to a wider spectrum of Bangkok families — both expatriate and Thai local.

Holistic Character Development

Beyond academic achievement, CISB's philosophy explicitly encompasses the development of core values: Respect, Trust, Self-esteem, and Love. The school states: "Besides the academic arena, we [instil] self-esteem and love" — signalling that character formation is treated as co-equal to academic outcomes, not subordinate to them.

Formative Assessment Over High-Stakes Exams

The school's pedagogical philosophy is reflected in its assessment approach. Rather than subjecting young children to high-stakes tests, CISB's teachers employ continuous formative assessment — evaluating students as learning progresses rather than through isolated examination events. This approach aligns with progressive British early-years education thinking and is particularly suited to the Foundation-to-Year 8 age range CISB serves.

Community and Partnership

CISB's philosophy extends beyond the classroom to embrace "education, community and social partnerships." This framing positions the school as an active participant in the broader Bangkok community rather than an insular international enclave — an important distinction given the school's mixed local and international student body (approximately 50/50 split).

Promise to Every Child

The school articulates a direct promise: "We promise to deliver education to every child, building dreams and opening doors for every child who walks through ours." This language of promise and personal commitment is unusual in institutional mission statements and reflects the founders' genuine conviction that drove them to establish the school in 2018.

CISB's Academic Culture

CISB's academic identity is firmly rooted in the British National Curriculum, delivered entirely in English from the Early Years through to Year 8. This provides a structured, internationally recognised framework while remaining accessible to both expatriate families and local Thai families seeking a high-quality English-medium education.

Curriculum Structure

The school organises its programme into three developmental stages:

• Early Years (ages 2–3): Play-based learning aligned with British EYFS principles
• Foundation Stage (ages 3–5): Structured introduction to literacy, numeracy, and core subjects
• Primary (ages 5–11): Full British National Curriculum across English, Mathematics, Science, Humanities, ICT, Physical Education, and Arts
• Lower Secondary (Years 7–8, ages 11–13): Continued British curriculum approach building toward secondary qualifications

Thai language and cultural education are integrated throughout, reflecting the school's Bangkok context and mixed student body.

Formative Assessment Philosophy

A defining feature of CISB's academic culture is its emphasis on formative rather than summative assessment. The school explicitly states that "our professional teachers assess as [learning progresses], not [relying on] formal examinations as required within the UK Curriculum." This philosophy creates a lower-stress learning environment, particularly appropriate for younger learners, and reflects the school's belief that learning should be continuous and developmental rather than judged at discrete examination points.

Small Class Sizes

With an average class size of approximately 25 students and a student-teacher ratio of roughly 9:1, CISB offers relatively personalised attention compared to larger Bangkok international schools. This scale allows teachers to apply the formative assessment approach meaningfully, tracking individual student progress rather than relying on cohort-level examinations.

Language of Instruction

All core academic instruction is delivered in English, with English estimated to account for approximately 85% of instructional time. Thai language is taught as a distinct subject and cultural component, reflecting both legal requirements for schools licensed in Thailand and the school's commitment to cultural integration.

Future Academic Development

As the school is still relatively young (founded 2018, opened 2020), it has not yet produced IGCSE or A-Level candidates. The school's academic trajectory suggests that as current students progress, CISB will need to develop or affiliate with examination programmes at the secondary level.

CISB's Campus and Physical Environment

For a relatively young and modestly-priced Bangkok international school, CISB has invested substantially in its physical campus. Located in the Suan Luang district, the school occupies approximately 7 rai (around 11,200 square metres) — a meaningful footprint for an urban Bangkok school that allows genuine outdoor learning and play spaces.

Sports and Outdoor Facilities

The campus features an artificial turf football (soccer) field, which is a significant facility for a school of this size, enabling structured physical education and after-school sports clubs regardless of Bangkok's intense weather. A basketball court provides a second major sports venue. For younger children, there is a dedicated outdoor play area with sand pit and a small pool, supporting the sensory and physical development emphasis of the Early Years programme.

All-Weather Learning

A covered patio area ensures that outdoor activities and breaks can continue even during Bangkok's frequent rain periods. This design feature reflects thoughtful consideration of the tropical climate and supports the school's commitment to daily physical activity and outdoor learning.

Green Spaces

The campus includes generous green areas, which are notably rare in Bangkok's urban school landscape. These spaces contribute to a calmer, more naturalistic learning environment and support the school's broader ethos of holistic child development.

Classroom and Indoor Spaces

While the school does not publish detailed internal facility specifications, the campus includes age-appropriate classrooms for each year group, activity rooms for specialist subjects, and administrative spaces. The school's modest enrolment of approximately 142 students means that even standard classroom facilities offer relatively low density and generous space per child.

Campus Location

Suan Luang is a residential district in eastern Bangkok, somewhat removed from the heavy traffic corridors of central Bangkok. The school provides a minivan transport service (approximately 4,000 THB per month) to address the limited public transport accessibility of the area. This transport offering is important for families across the city to access the school.

CISB's Admissions Culture

CISB's admissions approach is a direct reflection of its founding philosophy: education is a right, not a privilege. This translates into an admissions culture that is deliberately welcoming and accessible rather than highly selective or exclusionary.

Fee Structure

The application fee of just 3,000 THB (approximately USD 80) is exceptionally low by Bangkok international school standards, where application fees of 10,000–50,000 THB are common. The enrollment (acceptance) fee is 40,000 THB, and a refundable deposit of 20,000 THB is required. Annual tuition ranges from 146,000 THB (Foundation) to 167,000 THB (Years 7–8), with an additional 16,000–16,500 THB lunch fee. These fees are positioned significantly below the Bangkok international school median, making CISB genuinely accessible to middle-income families.

English Language Requirements

Given that the entire curriculum is delivered in English following the British National Curriculum, students are expected to have or develop appropriate English proficiency. The school provides learning support for students who need additional English language assistance, consistent with its inclusive approach.

Assessment and Selection

CISB does not publish detailed entrance examination requirements, acceptance rates, or selectivity information, which is consistent with a school that positions itself as broadly accessible. The admissions process appears to focus on ensuring appropriate developmental readiness rather than academic selection.

Mixed Community

The school actively welcomes both international (expatriate) and local Thai students, with the student body currently split approximately 50/50 between international and Thai students. This reflects a deliberate community-building approach that values cultural diversity within a relatively intimate school environment of approximately 142 students.

No Scholarship Programme

Notably, CISB does not currently offer a formal scholarship or financial aid programme. This may reflect the school's strategy of keeping base fees accessible rather than running a scholarship system. The low fee structure itself acts as the primary accessibility mechanism.

Admissions Promise

The school articulates a distinctive admissions ethos through its official pledge: "We promise to deliver education to every child, building dreams and opening doors for every child who walks through ours." This language signals that CISB's admissions culture prioritises inclusion and opportunity over prestige and exclusivity.