Tuition & Affordability

Castilleja School tuition cost

We encourage all interested families to apply.

We recognize that an independent school education is a significant financial commitment, an investment that lasts a lifetime. To ensure that Castilleja is affordable for all admitted students, we offer a robust Tuition Assistance program that meets the needs of a wide range of financial circumstances. 

Tuition Assistance

Each year we distribute over $3.7 million to 20% of the student body. Applying for tuition assistance has absolutely no impact on admission decisions. Our goal is to support families who demonstrate financial need, which is calculated using the School & Student Services for Financial Aid (SSS).

By determining what each family can contribute to tuition, the Committee allocates awards ranging from $5,000 to $56,000 depending on each applicant's financial situation. Recipients of Tuition Assistance represent a broad range of income levels, from less than $20,000 to $300,000.

Información de Asistencia de Matrícula

More about Tuition Assistance

2022–23 Tuition

6th to 12th Grade Tuition & Fees are $56,500.

Additional Expenses:

  • Books & Uniforms (new or used): $650 – 1,100
  • Laptop: $1,000 – $2,000
  • Tuition Insurance (optional): $325

Contact Us

We're happy to answer any questions you may have.

Contact us at: 

(650) 470-7733 or