Type
-
School
The Winsor School
Siviq Rank#31Boston, MA
13 AP Courses
Enrollment
480
Student-Teacher Ratio
-
Admit Rate
-
Reach
Local / Regional
Narrative
Profile Notes
Summary
The Winsor School is a Boston-based independent 5–12 girls’ school with 480 students, including 266 in the Upper School. The 2025–2026 profile reports 13 AP courses, 75 full-time teaching faculty, no class rank, an unweighted cumulative GPA through grades 9–11, 53% students of color in the Upper School, and 25.2% of students receiving financial assistance. The school reports 100% college attendance and lists frequent college destinations for graduates across the four-year span 2022–2025.
College Counseling
Jennifer Graham serves as Director of College Counseling, supported by Laura Iwanik, Associate Director of College Counseling.
Advanced Coursework
Of Winsor’s 13 AP courses, three are in math, four are in science, and four are in world languages. Winsor does not offer AP courses in history or English except for one semester of AP Macroeconomics. All junior and senior English and history courses are taught at the honors/AP level.
Matriculation Notes
100% attending college
Siviq Layer
Siviq Scores
Siviq Scores
Precomputed percentiles relative to similar schools. These scores are descriptive rather than judgmental.
Academic Program
61st percentile
Higher reported academic program than 61% of similar schools.
Combines advanced-course offerings, testing, and reported honors or IB signals.
Average Class Size
15th percentile
Lower reported average class size than 15% of similar schools.
Smaller reported average classes score higher within each peer cohort.
Institutional Resources
59th percentile
Higher reported institutional resources than 59% of similar schools.
Uses linked nonprofit financial capacity when a reviewed EIN match is available.
Outcomes
100th percentile
Higher reported outcomes than 100% of similar schools.
Based on reported college destinations in the current school profile.
Reach & Access
68th percentile
Higher reported reach & access than 68% of similar schools.
Combines geographic reach and reported access signals from the current school data.
Standardized Data
Profile
Profile
Overview
- Grades Served
- 5-12
Profile
Academics
- AP Courses
- 13
- Honors Program
- Yes
Profile
Student Body
- Students of Color
- 53%
- Receiving Financial Aid
- 25.2%
Profile
Policies
- Class Rank Policy
- Winsor does not provide a class rank.
- Weighted Grades
- No
- Weighted Grades Policy
- Winsor calculates an unweighted, cumulative (9–11) grade point average at the end of 11th grade.
Linked Nonprofit Data
Nonprofit Financials
Net Assets
$206,027,284
Tax year 2024
Net Income
$1,507,885
Latest revenue minus expenses from the school's nonprofit filing.
Total Expenses
$41,935,264
Tax year 2024
Expenses Per Student
$87,365
Calculated from total expenses divided by the current school-profile enrollment.
Location Context
Nearest
Institutional Details
People & Credentials
Institutional
Leadership
Head of School
Meredith Legg
Assoc. Head of School
Kate Caspar
Head of Upper School
Kim Ramos
Institutional
Contacts
Director of College Counseling
Jennifer Graham
Associate Director of College Counseling
Laura Iwanik
Office Manager
Mari Powell
Institutional
Accreditations
Accredited
New England Association of Schools and Colleges (NEASC)
Institutional
School Codes
CEEB CODE
220405
External References
Links
College Outcomes
Top Colleges
Search & Answers
The Winsor School Frequently Asked Questions
What is the student-teacher ratio at The Winsor School?
The current school profile does not publish a normalized student-teacher ratio for The Winsor School.
How many students are enrolled at The Winsor School?
The current school profile reports about 480 students enrolled at The Winsor School.
What grades does The Winsor School offer?
The Winsor School currently reports serving grades 5-12.
Is The Winsor School a day school or a boarding school?
The Winsor School is a private school.
Does The Winsor School offer advanced placement (AP) courses?
Yes. The current school profile reports 13 AP courses at The Winsor School.
How many students receive financial aid at The Winsor School?
The current school profile says about 25.2% of students at The Winsor School receive financial aid.
Which colleges show up most often for The Winsor School?
The current school profile highlights Harvard University as one of the top reported college destinations for The Winsor School.
Does Winsor rank students or use a weighted GPA?
No. Winsor says it does not provide class rank, and it reports an unweighted cumulative GPA for grades 9–11 at the end of 11th grade.
How much financial aid do Winsor students receive?
Winsor reports that 25.2% of the student body receives financial assistance.
What does the school say about student diversity in the Upper School?
Winsor reports that 53% of Upper School students identify as multiracial or as students of color.
Who leads college counseling at Winsor?
College counseling is led by Jennifer Graham, Director of College Counseling, with Laura Iwanik serving as Associate Director.
By Geography
Nearby Schools
By Similarity
Similar Schools
Provenance
Sources
| Source | Type | Checked | Metrics |
|---|---|---|---|
| 2025-2026 School Profile (PDF) Used for normalized profile metrics, school facts, FAQ answers, and school SEO metadata. Official source: bbk12e1-cdn.myschoolcdn.com/ftpimages/1082/misc/misc_240714.pdf | School Profile PDF | Apr 02, 2026 | AP Courses • Academic Rigor Category • Access Category • Accreditations • Advanced Course Notes • Average Class Size • More normalized profile fields |
| 2025-2026 school profile PDF bbk12e1-cdn.myschoolcdn.com/ftpimages/1082/misc/misc_240714.pdf | Official Linked File | May 11, 2026 | Faculty Count • Honors Program |
| About - The Winsor School www.winsor.edu/about | Official Website Page | May 11, 2026 | Founded Year |
| The Winsor School | Top Private School for Girls in Boston, MA www.winsor.edu | Official Website Page | Apr 05, 2026 | Average Class Size |
Sources & Data QualityMirrored artifacts, website inventory, and normalization review notes for this school profile.
Source Links
Known Website Addresses
| Role | URL | Method |
|---|---|---|
| official_website | www.winsor.edu/about/at-a-glance | supplemental_backfill |
| official_website | www.winsor.edu/about/facts | supplemental_backfill |
| official_website | www.winsor.edu/about/fast-facts | supplemental_backfill |
| official_website | www.winsor.edu/about/quick-facts | supplemental_backfill |
| Academics - The Winsor School | www.winsor.edu/academics | supplemental_backfill |
| Admission - The Winsor School | www.winsor.edu/admission | supplemental_backfill |
| Tuition and Financial Aid - The Winsor School | www.winsor.edu/admission/tuition-and-financial-aid | supplemental_backfill |
| official_website | www.winsor.edu/admissions | supplemental_backfill |
| Community Life - The Winsor School | www.winsor.edu/community-life | supplemental_backfill |
| College Counseling - The Winsor School | www.winsor.edu/academics/college-counseling | supplemental_backfill |
| College Counseling - The Winsor School | www.winsor.edu/academics/college-counseling | site_scan |
| 2025-2026 school profile PDF | bbk12e1-cdn.myschoolcdn.com/ftpimages/1082/misc/misc_240714.pdf | page_scan |
| About - The Winsor School | www.winsor.edu/about | supplemental_backfill |
| Directory - The Winsor School | www.winsor.edu/about/directory | supplemental_backfill |
| The Winsor School | Top Private School for Girls in Boston, MA | www.winsor.edu | existing |
| Community and Inclusion - The Winsor School | www.winsor.edu/about/community-and-inclusion | supplemental_backfill |
| History - The Winsor School | www.winsor.edu/about/history | supplemental_backfill |
| Leadership - The Winsor School | www.winsor.edu/about/leadership-2 | supplemental_backfill |
| Principles & Accreditations - The Winsor School | www.winsor.edu/about/principles-accreditations | supplemental_backfill |
All Canonical Metrics
| Metric | Value | Evidence |
|---|---|---|
| Grades Served | 5-12 | The Winsor School is a 5–12 girls’ school that values diversity, intellectual curiosity, authentic engagement, and personal integrity. |
| Lowest Grade | 5 | 5-12 |
| Highest Grade | 12 | 5-12 |
| Postgraduate Offered | - | 5-12 |
| Boarding Status | - | - |
| Boarding Status Code | - | - |
| School Type | 5–12 girls’ school | The Winsor School is a 5–12 girls’ school that values diversity, intellectual curiosity, authentic engagement, and personal integrity. |
| School Type Code | 5_12_girls_school | 5–12 girls’ school |
| Enrollment | 480 | ENROLLMENT — Total # of Students: 480 |
| Residential Enrollment | - | - |
| Day Enrollment | - | - |
| Student-Teacher Ratio | - | - |
| Founded Year | 1886 | Founded in 1886 |
| School Leadership | - | ADMINISTRATION — Meredith Legg, Head of School |
| Key Contacts | - | CONTACT — Jennifer Graham, Director of College Counseling, 617.912.1318 (O), [email protected] |
| Accreditations | - | ACCREDITATION — New England Association of Schools and Colleges (NEASC) |
| School Codes | - | 2025–2026 PROFILE FOR COLLEGES — CEEB CODE: 220405 |
| AP Courses | 13 | Of Winsor’s 13 AP courses, three are in math, four are in science, and four are in world languages. |
| Average Class Size | 79 | Average Class Size 79 |
| IB Program | - | - |
| Honors Program | Yes | Highest levels offered: all junior and senior English electives are taught at the honors/AP level. ... Highest level offered: All junior and senior history courses are taught at the honors/AP level. |
| Advanced Course Notes | Of Winsor’s 13 AP courses, three are in math, four are in science, and four are in world languages. Winsor does not offer AP courses in history or English except for one semester of AP Macroeconomics. All junior and senior English and history courses are taught at the honors/AP level. | Of Winsor’s 13 AP courses, three are in math, four are in science, and four are in world languages. Winsor does not offer AP courses in history or English except for one semester of AP Macroeconomics. |
| Faculty Count | 100 | 100 FACULTY |
| College Counseling Summary | Jennifer Graham serves as Director of College Counseling, supported by Laura Iwanik, Associate Director of College Counseling. | CONTACT — Jennifer Graham, Director of College Counseling ... Laura Iwanik, Associate Director of College Counseling |
| Testing Policy | - | - |
| Testing Policy Code | - | - |
| Average SAT | - | - |
| Average ACT | - | - |
| Matriculation Summary | 100% attending college | COLLEGE MATRICULATION — % attending college: 100 |
| Top Colleges | - | Harvard University 17; Emory University 13; Massachusetts Institute of Technology 9; Cornell University 8; Amherst College 7; Boston College 7; Brown University 7; New York University 7; Tufts University 7; Colby College 6; Washington University in St Louis 6; Yale University 6; Georgetown University 5; Northeastern University 5; Northwestern University 5; University of Massachusetts-Amherst 5; University of St Andrews 5; Bates College 4; Boston University 4; Carnegie Mellon University 4; Columbia University in the City of New York 4; Dartmouth College 4; Fordham University 4; Middlebury College 4; Princeton University 4; University of Michigan-Ann Arbor 4; University of Virginia-Main Campus 4; Brandeis University 3; Hamilton College 3; Haverford College 3; Stanford University 3; University of Pennsylvania 3; Wellesley College 3; Williams College 3 |
| States Represented | - | - |
| Countries Represented | - | - |
| Students of Color | 53 | 53% of students in the Upper School identify as multiracial or students of color. |
| International Students | - | - |
| Receiving Financial Aid | 25.2 | 25.2% of the student body receives financial assistance. |
| Tuition-Free Share | - | - |
| Applicants | - | - |
| Admitted | - | - |
| Matriculated | - | - |
| Admit Rate | - | - |
| Yield Rate | - | - |
| Class Rank Policy | Winsor does not provide a class rank. | Winsor does not provide a class rank and calculates an unweighted, cumulative (9–11) grade point average at the end of 11th grade. |
| Class Rank Policy Code | not_reported | Winsor does not provide a class rank. |
| Weighted Grades | No | Winsor does not provide a class rank and calculates an unweighted, cumulative (9–11) grade point average at the end of 11th grade. |
| Weighted Grades Policy | Winsor calculates an unweighted, cumulative (9–11) grade point average at the end of 11th grade. | Winsor does not provide a class rank and calculates an unweighted, cumulative (9–11) grade point average at the end of 11th grade. |
| Disciplinary Reporting | - | - |
| Boarding Model | unknown | unknown |
| Selectivity Category | limited_evidence | limited_evidence |
| Academic Rigor Category | high | high |
| Testing Policy Category | not_reported | not_reported |
| College Counseling Category | established | established |
| Student Body Reach Category | regional | regional |
| Access Category | meaningful_access | meaningful_access |
| Outcome Category | exceptional_outcomes | exceptional_outcomes |
| Signals | - | Located in Boston and 'attracts students from 55 towns in the greater Boston area'; No boarding status reported in supplied evidence; 13 AP courses offered, with junior and senior English and history taught at the honors/AP level; Students typically take five academic core courses each year; It is very rare for a student to take more than four AP courses over the entire high school program; No admit rate, applicant volume, yield, SAT, or ACT averages reported; College counseling includes a Director and Associate Director of College Counseling; 25.2% of students receive financial assistance; 100% attending college reported; Four-year college matriculation list includes frequent placements at highly selective institutions such as Harvard, MIT, Yale, Princeton, Stanford, Brown, Columbia, Cornell, Amherst, Williams, and others |