Singapore International School of Bangkok (SISB)
Key Stats
Annual Fees: US$11K – US$23K
Curriculum: IB · British
Age Range: 2–18
Students: ~4,700
Location: Bangkok
Updated February 2026
In Brief
Singapore International School of Bangkok operates multiple campuses offering Singapore curriculum for primary years and Cambridge IGCSE/A-Levels, but faces widespread criticism from teachers and parents about management practices, excessive workloads, and prioritizing profit over education quality. While fees may be more accessible than premium Bangkok schools, extensive negative feedback suggests significant concerns about working conditions and academic standards.
SISB runs several campuses across Bangkok including Nonthaburi (established 2001) and Suvarnabhumi locations, delivering Singapore curriculum for primary students with bilingual English-Mandarin instruction, then transitioning to Cambridge IGCSE and A-Level pathways for secondary years. The school network has expanded rapidly and positions itself as providing Singapore-style education, though it operates independently without official Singapore Ministry of Education recognition. Marketing materials highlight the bilingual approach and cultural emphasis, targeting families seeking Asian educational values within an international framework.
Teacher discussions reveal troubling patterns across SISB campuses, with reports of extremely high workloads including 25-30 teaching periods per week plus supervision duties, cover lessons, and mandatory after-school activities. Multiple educators describe working 7am-4pm with minimal breaks, eating meals with students, and handling recess supervision on top of teaching responsibilities. The school requires teachers to work extended hours including weekend events, with staff reporting burnout and describing the institution as prioritizing profit over educational quality. High staff turnover rates and negative workplace culture appear consistent across different campus locations, with teachers frequently leaving after single contracts.
What parents value
- –Bilingual English-Mandarin instruction from early years
- –Singapore curriculum approach in primary years
- –Cambridge IGCSE and A-Level pathways for international recognition
- –Multiple campus locations across Bangkok area
- –More accessible fees than premium tier international schools
- –Established network with over 20 years of operation
Points of consideration
- –Widespread reports of excessive teacher workloads and poor working conditions
- –High staff turnover suggesting management and workplace issues
- –Not officially recognized by Singapore Ministry of Education despite branding
- –Consistent negative feedback about prioritizing profit over education quality
- –Mixed student and parent experiences with academic rigor
- –Limited public discussion compared to established Bangkok international schools
Annual Fees
| Year Group | Age | USDTotal Annual Fee |
|---|---|---|
| Nursery 1 | 3 | 12,533 |
| Nursery 2 | 3 | 12,533 |
| Kindergarten 1 | 3 | 13,403 |
| Kindergarten 2 | 4 | 13,403 |
| Primary 1 | 6 | 14,686 |
| Primary 2 | 6 | 14,686 |
| Primary 3 | 6 | 15,987 |
| Primary 4 | 6 | 15,987 |
| Primary 5 | 6 | 17,700 |
| Primary 6 | 6 | 17,700 |
| Grade 7 | 12 | 19,010 |
| Grade 8 | 13 | 19,010 |
| Grade 9 | 14 | 20,302 |
| Grade 10 | 15 | 20,302 |
| Grade 11 | 16 | 24,626 |
| Grade 12 | 17 | 24,626 |
Fees converted from THB. For the most up to date and accurate figures please double check with the school.
Additional Fees
| Fee | Amount |
|---|---|
| Application Fee | 156 |
| Assessment Fee | 156 |
| Enrolment Fee | 6,864 |
| Deposit (Refundable) | 1,560 |
Photos

Academic Results
Academic results have not been made publicly available by this school.
Extra Curriculars
Contact the school for details on co-curricular activities and facilities. Ask what a normal week looks like outside lessons for your child's interests.
Inspections & Accreditations
Inspection
No published inspection details are currently available.
Accreditations
Accreditation details are not publicly listed.
Memberships
Membership details are not publicly listed.
Student Body
Bangkok's international schools serve a diverse community of expat and local families. Contact the school for current enrolment details.
Leadership
Kelvin Koh - Chairman of the SISB Schools Governing Board
Kelvin Koh is the co-founder and CEO of SISB Co. Ltd., the organization behind Singapore International School of Bangkok. Educated in Singapore and based in Thailand since 1992, he holds an executive MBA from Sasin (Chulalongkorn University) and a diploma in mechanical engineering from Ngee Ann Polytechnic.
