Applying to Castilleja

Throughout the application process, we want you to know that we are in this together. Our admission team is eager to connect with you personally, help you navigate our application process, and learn about “What’s Possible?” for your daughter at Castilleja.

The information listed below outlines Castilleja’s Admission process. Application forms as well as further details about each step can be found on our online application platform, If you have any questions or need assistance completing these steps or forms please call (650) 470–7733 or email

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Steps to Apply