Tuition & Fees

A GSB education is a significant investment in your child’s future. Our students are talented, passionate, creative, and thoughtful and come from a diverse range of backgrounds, independent of financial circumstances. We encourage families who need assistance to apply for financial aid. Tuition assistance awards are available for eligible families.

"Thank you to our wonderful second grade team and teacher, Mrs. Tuohy, for creating purposeful and detailed lesson plans. Her directions were easy to follow and the assignments were enjoyable. Thank you to the Middle School team and the fifth grade teachers. The use of KnightSite to list assignments, due dates, and mark assignments completed has been a very useful tool. The lessons have been thoughtful and purposeful. Thank you to all the staff at GSB for working diligently for our students."

Current Lower & Middle School Family

2023-24 Tuition 

The GSB daily lunch program is included in tuition costs for grades K-12.

Preschool  |  $23,570 (5 full days)  *  $16,590 (five half-days)
Prekindergarten  |  $23,750 (5 full day) *  $16,590 (five half-days)
Kindergarten  |  $33,000
Lower School (Grades 1-4) | $39,350
Middle School (Grades 5-8) | $44,750
Upper School (Grades 9-12) | $50,750

Tuition Refund Insurance Plan
Read additional details about the Tuition Refund Plan.

Monthly Payment Plan

Monthly, biannual, and annual payment plans are available and managed through Blackbaud Tuition Management, which is activated during enrollment.

Additional Fees

Books and Academic Supplies

For books, technology, day field trips, and academic supplies, families should budget:

  • Early Childhood - $300 - 450
  • Lower School - $450
  • Middle School - $625
  • Upper School - $750 (includes yearbook) 

Matriculation Fee

  • New students upon enrollment - $400 

International Student Fee

  • International student enrollment - $5,000 


Other Expenses

  • Purchases are billed on a monthly basis as they occur from the GSB School Store, for athletic equipment, overnight field trips, and other incidental expenses.
  • The annual Spring Unit program is billed separately.
"Gill prepared my son academically and intellectually for his post-high school educational experience. My son graduated from Gill with the confidence that he was more than capable of meeting the challenges and rigors of college."

Connect With Us