Singapore International School of Bangkok (SISB) campus

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 GroupAgeUSDTotal Annual Fee
Nursery 1312,533
Nursery 2312,533
Kindergarten 1313,403
Kindergarten 2413,403
Primary 1614,686
Primary 2614,686
Primary 3615,987
Primary 4615,987
Primary 5617,700
Primary 6617,700
Grade 71219,010
Grade 81319,010
Grade 91420,302
Grade 101520,302
Grade 111624,626
Grade 121724,626

Fees converted from THB. For the most up to date and accurate figures please double check with the school.

Additional Fees

FeeAmount
Application Fee156
Assessment Fee156
Enrolment Fee6,864
Deposit (Refundable)1,560

Photos

Singapore International School of Bangkok (SISB) campus

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.