The Application Processing fee for the 2023/24 School Year is 4,700 Baht. This fee is payable when an application is submitted to the Admission Office and is not refundable.


The Registration fee for the 2023/24 School Year is 260,000 Baht. This one-time fee is payable the first year a student enrolls in grades Kindergarten through Grade 12 and is not refundable unless the new student withdraws within the first 20 days of enrollment.


The Annual fee for the 2023/24 School Year is 22,000 Baht, or 11,000 Baht per semester. This yearly non-refundable fee is payable by all students enrolled in grades Kindergarten through Grade 12. Current holders of Assessment Certificates are exempted from this fee.


The International School Association (ISA) Membership fee for the 2023/24 School Year is 10 Baht.


The Tuition fees for the 2023/24 School Year are:

Per Annum Per Semester
Pre-Kindergarten 592,000 296,000
Elementary (Grades K-5) 911,000 455,500
Middle (Grades 6-8) 1,022,000 511,000
High (Grades 9-12) 1,075,000 537,500
Life Centered Education* 950,000 475,000

*Life Centered Education: This fee is in addition to the Tuition Fees. If you are interested in our Intensive Needs program, please contact the school for further details.


The Transportation (Air-conditioned, Adult monitored & Two-way only) fees for the 2023/24 School Year are below.

Distance from ISB (km) Semester 1 Semester 2 Whole year
1 to 5 45,000 54,800 99,800
6 to 15 47,200 57,500 104,700
16 to 25 53,900 65,700 119,600
26 to 35 59,900 73,000 132,900
36 to 45 65,600 80,100 145,700
46 to 55 72,000 87,700 159,700


Full tuition fees on a per-semester basis are charged after a student has been at ISB for 50 days. Up to that time, ISB will charge 2% of the per semester tuition fee per day. Transportation fees are charged based on the no. of days of each semester and will be prorated based on the number of days of attendance.

In the event of circumstances not foreseen when fees were set, the Board of Trustees reserves the right to increase or revise fees at any time during the school year


Students presently enrolled:
  • A non-refundable deposit of Baht 40,000 is due by April 30, 2023.
  • The 1st semester Tuition, Transportation, Annual, and Membership fees, minus the non-refundable deposit paid by April 30, 2023, are due by June 30, 2023.
  • The 2nd semester Tuition, Transportation, and Annual fees are due by November 15, 2023.
New Students:
  • Baht 40,000 non-refundable deposit is immediately due after acceptance
  • The 1st Semester – All school fees are due by June 30, 2023.
  • The 2nd Semester – All school fees are due by November 15, 2023.
  • For students enrolling after the above due dates, all (full/pro-rated) school fees are immediately due after acceptance.


Fees are payable in Thai Baht, net of any bank charges (transfer fees, credit card charges etc.)

Payments can be made by:
  • Online (for the application fee and non-refundable deposit only)
  • Cash
  • Check, made payable to “International School Association”
  • Credit Card (Visa, Master, Amex)
Wire transfer to:

Account name: International School Association
Bank Name: (TTB) TMB Phanachart Bank PCL., Central Plaza Chaengwattana Branch
Savings account number #235-2-20990-8
Bank address: 3000 Phaholyothin Road, Jatujak, Bangkok 10900, Thailand

Important: A fax or an email of the wire transfer/deposit slip referring to the children’s name is required.


A late payment fee of 0.75% per month will be charged for all overdue payments. Students may be excluded from classes when payments are overdue.


While ISB maintains limited student accident insurance coverage for activities authorized by and under the supervision of school authorities, each student is required to obtain his/her own adequate medical insurance. On overseas trips, travel insurance is mandatory and will be included in the trip cost for all students.


Students leaving the school are required to clear all obligations before final records will be forwarded to the next school or University. This includes text, library books, and other school materials.


For additional information or explanation you may contact our Invoice Office at e-mail, or call Khun Sawitree, Invoice Assistant at 02-963-5800 ext. 1121, Khun Atchara, Invoice Officer at 02-963-5800 ext. 1122.