Welcome to Commonwealth School's online application process.

While the deadline for fall 2018 admission has passed, we may consider students on a case-by-case basis. Please contact our admissions office (617-266-7525 ext. 233; to discuss the possibility of a late application.

The application fee is $60 for U.S. residents and $120 for international applicants. We offer a limited number of fee waivers; to request one, please contact our office.

Commonwealth accepts two forms of online application. Please complete ONLY ONE application.

1. Ravenna: register with Ravenna and create a basic profile. Then, select 'Commonwealth School' from the School Directory to begin our process.

2. SSAT Standard Application Online (SAO): students applying to multiple SAO schools may wish to use the SSAT platform.

If you indicate in the application form that you wish to receive information on financial aid, we will send you instructions by the end of the calendar year. Both admissions and financial aid decisions will be mailed on March 10, 2018.

Additional Steps


During this 1 1/2-hour visit, prospective students and families meet with a member of the admissions committee and see the school. Deadline: February 1, 2018

We ask students to submit our brief, online application before scheduling an interview. While we offered families the opportunity to interview before applying during October, our schedule for this month is now full and we request an initial application. Once we receive your application we will call you to arrange your visit.


Following your interview you will return to Commonwealth for a full-day visit during which a student host will accompany you to classes, all-school meeting, and lunch. You will also write two essays during your visit. Deadline: February 1, 2018

If you are an out-of-state or international applicant and your travel plans necessitate a same-day interview and full-day visit, kindly let us know when we reach out to you about scheduling.

Please note that we require international applicants to submit SSAT and/or TOEFL scores before scheduling a day visit.


All applicants must take either the Secondary School Admissions Test (SSAT) or the Independent School Entrance Exam (ISEE). Our SSAT code is 2542 and our ISEE code is 220222. Deadline: February 1, 2018

SSAT test dates for 2017–18 are:

October 14, 2017
November 11, 2017
December 9, 2017
January 6, 2018*

*last possible date to receive an admission
decision by March 10

Unless they attend a school in which English is the primary language of instruction, international students should plan to take the Test Of English as a Foreign Language (TOEFL) as well.

This season we also welcome (but do not require) students who have taken the Character Skills Snapshot, an online character development assessment through SSAT, to share their reports with us.

Submit Recommendations

Commonwealth requires three recommendations from currents teachers: one from an English teacher, one from a math teacher, and one from your head of school, principal, guidance counselor, or placement counselor. This year, Commonwealth will accept recommendations through Ravenna's online recommendation system. Directions for online recommendations can be found in the application portal. If you have questions, please contact Lindsay Ewing, Assistant Director of Admissions, at 617-266-7527 x239 or Deadline: February 1, 2018

Request Transcript

Applicants are required to download and fill out a transcript release form, which they will turn in to their current school. School administrators should either upload transcripts to Ravenna/SAO or send them directly to Commonwealth by email ( or mail (151 Commonwealth Avenue, Boston, MA 02116). Deadline: February 1, 2018

Please do not hesitate to contact us by email at or by phone at 617-266-7525 if you have questions or if we can be of assistance.