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Tuition & Affordability

Investing in a culturally diverse, bilingual private education is investing in your child’s future. 

As an ISB student, your child will have access to individuals, ideas, and experiences that are not typical of a traditional school environment. ISB’s core identity as a Center for Global Learning reflects our bold and visionary commitment to preparing students for the complexities of an interconnected world. Investing in an ISB education will:

  • Equip your child with improved cognitive ability and problem-solving skills: The continuous need to switch between languages trains the brain to be more nimble and adaptable. ISB students develop the mental agility that translates into better problem-solving skills and a greater ability to handle tasks that require shifting attention.
     

  • Support your child’s growth toward future readiness: ISB students develop the capacity to adapt, lead, and innovate in an increasingly globalized world and fluid future. Their heightened intercultural understanding enables them to engage with and respect diverse perspectives, fostering empathy and collaboration.
     

  • Open doors to global higher education options: ISB students matriculate to many of the nation’s and the world’s top colleges and universities, resulting in the most geographically diverse college matriculation list in New England.  

On our Community Voices page, you can discover the exceptional students, families, alumni, and faculty and staff who make ISB a place where every individual is known, connected, and supported.

   

2025-2026 Tuition

Grade Level Cost
Half-Day for Preschool (Toute Petite Section and Pre-K Only) - Mornings Only $28,100             
Preschool (Toute Petite Section, Pre-K, & Mid-K) and Kindergarten $35,130
Lower School (Grades 1-5) $38,830
Middle School (Grades 6-8) $40,960
Upper School (Grades 9-12) $48,820

 

  • In addition to tuition, fees, books, and school supplies, most students incur additional costs, which will vary depending on students’ needs and activities. To allow for planning and transparency, please see below for the range of costs associated with our program and the reduced fees families with financial aid grants might expect to pay.
     
  • Additional information on ISB’s Tuition & Fees schedule can be found here.
     
  • Learn more about the Programme Bleu Fidélité, which offers a tuition freeze for eligible Upper School students enrolled at ISB since Grade 5 or earlier. Click here for details.

Financial Aid Application Process

Deadlines:

Complete the Clarity application online. 
Returning families: December 15th, 2025
New families: January 15th, 2026

How to Apply: 

Applying for ISB financial aid through Clarity.
Resources: Clarity Quick Reference Guide | Clarity Family Application Guide 

  • ISB partners with Clarity to conduct financial need assessments for families that may need assistance in paying tuition. The application process is fair and confidential. Families should apply online. Clarity charges a processing fee.  Families who need financial assistance with this fee, please contact Victor Ng.
  • Please find this guide to help you prepare to fill out the application. 
  • To get started, please go to the Clarity Application and create an account. The application typically takes less than 30 minutes to complete. The Clarity Application is also mobile-friendly, so you can complete it from anywhere. You are also able to save your progress and return at any time. If you need support during the application, there is in-app support available through the “Help” button in the bottom left of the screen, as well as email and phone support at support@clarityapp.com or 206-210-3752.

Frequently Asked Questions

Additional Information