Australian International School Bangkok - Soi 31 vs St. Mark's Australian International School
Australian International School Bangkok - Soi 31 and St. Mark's Australian International School are both in Bangkok, about 6 km apart. Both schools offer Australian and Cambridge IGCSE programmes. Australian International School Bangkok - Soi 31 also offers Cambridge (Secondary), Cambridge International AS Levels and Cambridge A Levels, and St. Mark's Australian International School also offers Singapore. Published annual fees are THB 393,200 - 520,000 at Australian International School Bangkok - Soi 31 and THB 285,650 - 453,100 at St. Mark's Australian International School, which puts Australian International School Bangkok - Soi 31 roughly 24% higher. Australian International School Bangkok - Soi 31 takes pupils from 4 to 18, and St. Mark's Australian International School from 4 to 16. Australian International School Bangkok - Soi 31 is the larger school, with around 800 pupils to St. Mark's Australian International School's 190. Typical class sizes are 15 at Australian International School Bangkok - Soi 31 and 18 at St. Mark's Australian International School.
Australian Curriculum, Cambridge (Secondary), Cambridge IGCSE, Cambridge International AS Levels, Cambridge A Levels
Curriculum
Australian Curriculum, Cambridge IGCSE, Singapore Curriculum
Pupils
Pupils
800
Pupils
190
Typical class size
Typical class size
15
Typical class size
18
Instruction language
Instruction language
English
Instruction language
English
Opened
Opened
2002
Opened
1999
Bus service
Bus service
Yes
Bus service
No
Essentials
Essentials
Location
Location
Australian International School Bangkok’s Soi 31 campus is nestled at 319 Sukhumvit Soi 31 in Bangkok’s Watthana district. It resides in a quiet, leafy residential area of central Sukhumvit, offering a calm environment while remaining well connected—taxis, BTS/MRT stations, and main road access are convenient. The campus shares proximity with the AISB Sports Centre and Innovation Centre and is just minutes away from the Soi 20 campus, connected by a supervised shuttle service, making transitions and shared activities easy.
Location
St. Mark’s is situated on Rama 9 Road in the Suan Luang district of Bangkok, a growing area known for its residential and commercial mix. The campus lies within easy reach of major roads like Srinakarin and the Ramkhamhaeng area, and is close to Bangkok’s airport rail link and expressways. This makes it convenient for families living in eastern and central parts of the city.
Stages
Stages
AISB operates a two-campus model: Soi 20 serves the Early Years (Nursery and Year 1), while the Soi 31 campus accommodates the full range from Foundation (Year 1) through to Year 12. This structure clearly distinguishes the youngest learners’ setting from older primary and secondary students, with most of the Foundation–Year 12 progression housed on Soi 31.
Stages
The school serves students from Early Years, Primary, Lower Secondary, and Upper Secondary (IGCSE and AUSMAT).
School type
School type
AISB operates as a day school.
School type
The school is a co-educational day school with no boarding facilities.
Pupil nationality mix
Pupil nationality mix
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Pupil nationality mix
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Additional learning support
Additional learning support
Support services include a structured EAL program with small-group and intensive options, along with a Learning Support department that provides personalized plans, assessments, and teacher collaboration. The Access and Inclusion teacher coordinates extra help with internal staff and external specialists as needed.
Additional learning support
The school does not have publicly available information on their Additional Learning Support.
Country affiliation
Country affiliation
While not formally affiliated with the Australian government, the school’s curriculum and identity are strongly influenced by Australian education.
Country affiliation
St. Mark’s is officially partnered with the Western Australian Government to deliver the AUSMAT (Australian Matriculation) programme.
Religious affiliation
Religious affiliation
The school has no religious affiliations.
Religious affiliation
The school is a Christian institution and is a member of the Association of Christian Schools International (ACSI).
School day structure
School day structure
At the Soi 31 campus, the school day begins at 07:30 for both Primary and Secondary students. Primary classes (Foundation to Year 6) finish at 14:00, while Secondary (Years 7–12) end at 14:50. Breaks and lunchtime are built into the timetable, with meals provided daily on campus. Early Years (Nursery to Pre-Kindergarten) are housed at the Soi 20 campus and follow shorter hours, but Foundation (from Year 1 onwards) transitions fully to Soi 31.
School day structure
Kindergarten: 8:00 am - 1:00 pm (After-school care option ends at 3:10 pm)
Pre-Prep to Year: 12: 8:00 am - 3:10 pm
Bus service details
Bus service details
AISB provides optional transportation in partnership with Montri Transport, a well-established Bangkok school transport provider. The service is door-to-door and includes both a driver and an adult supervisor on every route. Terms and conditions for the service are available directly from Montri upon request. This option gives families flexibility and additional safety for young children.
Bus service details
The school does not have publicly available information on their bus service.
Fees
Fees
Fee details
Fee details
Application and Registration Fees
* Application and Assessment Fee: THB 4,000 (non-refundable) * Registration Fee: THB 90,000 (one-time, non-refundable) * Sibling discounts: THB 10,000 off the registration fee for the second child; tuition fee discounts of 10% (second and third child) and 15% (fourth child).
Annual Tuition Fees (with per-term breakdowns)
* Foundation: THB 393,200 (Term 1: 184,000 | Term 2: 128,100 | Term 3: 81,100) * Year 1: THB 440,000 (206,700 | 143,400 | 89,900) * Year 2: THB 455,500 (213,900 | 148,500 | 93,100) * Year 3–4: THB 474,500 (222,800 | 154,700 | 97,000) * Year 5–6: THB 490,000 (230,100 | 159,700 | 100,200) * Year 7–8: THB 500,000 (234,800 | 163,000 | 102,200) * Year 9–10: THB 508,000 (238,600 | 165,600 | 103,800) * Year 11–12: THB 520,000 (244,200 | 169,500 | 106,300) *A 5% discount is available when tuition for the full academic year is paid in advance.*
Other Fees
* Education Resources: Foundation THB 9,000; Year 1 THB 11,000; Years 2–12 THB 15,000 * Camps (Years 7–9): THB 10,000 deposit, further charges invoiced separately * Meals: THB 25,340 annually * English as an Additional Language (if required): Regular THB 69,300; Intensive THB 104,500 annually * Transport: Door-to-door Montri bus (annual approx. THB 38,250–48,450 for return service, depending on zone). Inter-campus shuttle also available. * Uniforms: Primary items THB 350–600, Secondary THB 350–800, sports/swimwear additional.
Billing and Payment Invoices are issued per term and must be settled two weeks before term start. Payments can be made via bank transfer, cheque, or credit card (2% local, 3.5% overseas surcharge). Late payments incur a 3% monthly penalty.
Refunds Tuition fees may be refunded on a sliding scale if notice is given before or shortly after term start (up to 80% if withdrawn more than 15 days before). No refunds are given for meals, transport, EAL, after-school activities, or resource fees.
Fee details
One-Time Fees (Payable Upon Enrolment) Application Fee: THB 7,000 (non-refundable)
School Development Fee: THB 190,000 for Kindergarten to Year 9 (non-refundable) THB 60,000 for Year 10 to Year 12 (non-refundable) Security Deposit: THB 60,000 (refundable)
Annual Tuition Fees (Inclusive of snacks, lunch, textbooks, language lessons, music programme, and insurance)
Kindergarten: THB 285,650 Pre-Prep & Prep: THB 309,290 Year 1–6: THB 380,210 Year 7–10: THB 417,640 Year 11 ATAR Programme: THB 453,100 Year 12 ATAR Programme: THB 230,000 (only one semester charged)
Other Fees (Per Semester) English/Maths (3 sessions per week): THB 30,000 Japanese: THB 9,000 Additional Music or Activity ECA (per activity): THB 6,000 Taekwondo ECA: THB 7,000 Robotics ECA: THB 10,000 Swimming ECA (2 times per week): THB 10,000 Afternoon Daycare: THB 9,000 Summer School: THB 40,000 IGCSE Examination Fee (per subject): THB 10,000
Discounts Sibling Discount on Development Fee: 2nd child: THB 30,000 discount 3rd child: THB 60,000 discount Annual Payment Discount: 1.5% discount for full tuition fee payment in one billing
Late Payment Policy
A late payment fee of THB 2,000 per invoice will be charged for overdue accounts. All tuition and related fees must be settled before the semester begins; otherwise, the student may be denied admission to class.
Refund Policy and Payment Methods The school does not have publicly available information on their refund policy and payment methods.
Diving deeper
Diving deeper
Boarding arrangements
Boarding arrangements
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Boarding arrangements
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Uniform requirement
Uniform requirement
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Uniform requirement
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Food options
Food options
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Food options
—
House system
House system
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House system
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Governance and ownership
Governance and ownership
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Governance and ownership
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Academics
Academics
Curriculum details
Curriculum details
The Australian International School Bangkok (AISB) follows a pathway that combines the Australian Curriculum and the Cambridge International programme. In the Primary Years (Foundation to Year 6), the school uses Australian teaching approaches with a broad curriculum including English, Mathematics, Science, Humanities, Languages, the Arts, and Physical Education. In Lower Secondary (Years 7–8), students continue with the Australian Curriculum while also preparing through Cambridge Lower Secondary courses. In Middle Secondary (Years 9–10), students work towards the Cambridge IGCSE qualifications, which cover a wide range of academic subjects. The final stage, Senior Secondary (Years 11–12), offers the Cambridge AS and A Levels, providing internationally recognised qualifications for university entrance. Throughout all year levels, students also study Thai language and culture, with additional options in French, Mandarin, Japanese, and German for native speakers.
Curriculum details
St. Mark’s offers a curriculum that combines the Australian education framework with international components. In the Early Years, the school prioritises foundational skills in language, social development, and cognitive growth through exploratory learning and creative activities. At the primary level, the Australian curriculum continues to guide subject learning, with a strong focus on numeracy, literacy, science, and multilingual education. Students receive instruction in English, Thai, and Mandarin. In the lower secondary years, students transition to the Cambridge IGCSE curriculum, which builds subject depth and academic rigour across core areas. In Years 11 and 12, students follow the Australian Matriculation (AUSMAT) programme in partnership with the Western Australian Government. This provides students with the Australian Certificate of Education and an ATAR score, allowing for direct university admission in Australia and internationally. The programme includes coursework in areas such as mathematics, human biology, and communication studies.
1. Initial Inquiry and Campus Visit Families begin the admissions process by contacting the school directly or visiting the Soi 20 Campus. Parents are encouraged to tour the campus, meet staff, and discuss the suitability of the program for their child’s age group (Nursery to Year 1).
2. Application Submission An application form must be completed and submitted with the required supporting documents (such as passport copies, previous school reports if applicable, and medical records). At this stage, a one-time application is payable.
3. Assessment (if required) For certain year groups or based on the recommendation of the Head of School, an assessment may be required. This incurs an additional assessment fee. The assessment ensures that the child’s needs can be supported effectively within the program.
4. Offer of Placement Once the application and any assessments are complete, the school will issue an offer of placement if a place is available. Parents must then pay the non-refundable registration fee to secure the child’s enrolment.
5. Enrolment and Orientation Tuition fees must be paid before the child begins classes. Enrolment is confirmed only when the first term’s fees have been received in full. Orientation details are provided to help families and students settle into the school routine.
Admissions
School Visit Schedule a Visit:Parents must book a tour before applying. Purpose: This visit allows families to discuss their child’s educational needs with the Admissions Office, explore the school’s curriculum, and tour the campus facilities. Visiting Hours: Monday to Friday, 8:00 AM – 2:00 PM
Application and Assessments Application Form: Once a family decides to proceed, they schedule an appointment to:
Submit the application form Provide required documents Pay a non-refundable application fee of 7,000 THB
Student Assessments: During this visit, the school evaluates the child’s age-appropriate skills in:
English Mathematics Mandarin (where applicable)
Placement Decision: Based on assessment results, the school determines appropriate class placement. If needed, the school may recommend placement in a lower year level or identify learning support needs.
Enrollment Finalization
Principal Review:The school principal reviews the full application and assessment outcomes.
Notification: Admissions will inform parents of the decision within 7 days. In some cases, additional testing or interviews may be required.
Fee Payment: Once accepted, families must settle payment by the due date on the invoice. If not paid on time, priority will be given to other applicants.
Scholarships
Scholarships
The school's Soi 31 campus does not publicly disclose any scholarships, other than sibling discounts.
Scholarships
The school does not have publicly available information on their scholarships.
Waitlist
Waitlist
The school does not publicly disclose information about a waitlist or pool system.
Waitlist
The school does have waitlist. When Activated: If a class is full, families can opt to be placed on a waiting list.
Booking Deposit: A refundable deposit of 50,000 THB is required to secure a place on the waiting list.
Notification: The school will notify families when a space is expected to open.
Priority: Waitlist priority is given to families who already have children enrolled at the school.
Refund: The deposit is refundable upon written request, which also removes the child’s name from the waiting list.
