Type
-
School
Marlborough School
Siviq Rank#16Los Angeles, CA
17 AP Courses
Enrollment
282
Student-Teacher Ratio
7:1
Admit Rate
-
Reach
Limited Evidence
Narrative
Profile Notes
Summary
Marlborough School's 2025-2026 school profile describes an independent school for girls in Los Angeles, founded in 1889, with 282 Upper School students and 92 seniors in the Class of 2026. The profile reports an average class size of 14, 17 AP-designated course offerings, 14 Advanced Topics courses, no class rank, and Class of 2025 college matriculation outcomes.
Advanced Coursework
17 Advanced Placement courses and 14 Advanced Topics courses. AP course enrollment is subject to permission from the Department Chair. Students may take additional AP courses through One Schoolhouse; these appear as OS courses on the transcript and are not included in Marlborough's GPA. Courses with an asterisk denote the most rigorous course in the discipline.
Matriculation Notes
111 students from the Class of 2025 matriculated to 55 colleges in 21 states and Scotland.
Siviq Layer
Siviq Scores
Siviq Scores
Precomputed percentiles relative to similar schools. These scores are descriptive rather than judgmental.
Academic Program
58th percentile
Higher reported academic program than 58% of similar schools.
Combines advanced-course offerings, testing, and reported honors or IB signals.
Average Class Size
46th percentile
Lower reported average class size than 46% of similar schools.
Smaller reported average classes score higher within each peer cohort.
Institutional Resources
74th percentile
Higher reported institutional resources than 74% of similar schools.
Uses linked nonprofit financial capacity when a reviewed EIN match is available.
Outcomes
92nd percentile
Higher reported outcomes than 92% of similar schools.
Based on reported college destinations in the current school profile.
Reach & Access
4th percentile
Higher reported reach & access than 4% of similar schools.
Combines geographic reach and reported access signals from the current school data.
Student Experience
33rd percentile
Lower reported student experience than 33% of similar schools.
Lower student-teacher ratios score higher within each peer cohort.
Standardized Data
Profile
Profile
Overview
- Grades Served
- 7-12
Profile
Admissions
- Matriculated
- 2,025
Profile
Academics
- AP Courses
- 17
- Honors Program
- Yes
Profile
Student Body
- States Represented
- 21
- Receiving Financial Aid
- 1%
Profile
Policies
- Class Rank Policy
- Given the small class size of the Senior Class, Marlborough does not rank its students.
Linked Nonprofit Data
Nonprofit Financials
Net Assets
$141,298,800
Tax year 2024
Net Income
-$8,135,108
Latest revenue minus expenses from the school's nonprofit filing.
Total Expenses
$47,383,515
Tax year 2024
Expenses Per Student
$168,027
Calculated from total expenses divided by the current school-profile enrollment.
Location Context
Nearest
Institutional Details
People & Credentials
Institutional
Leadership
Head of School
Ms. Jennifer Ciccarelli
Director of Enrollment Management & Collegiate Partnerships
Dr. Jawaan Wallace
Institutional
Contacts
Director of Enrollment Management & Collegiate Partnerships
Dr. Jawaan Wallace
Enrollment and collegiate partnerships contact listed on the school profile.
Dean of College Counseling
Mrs. Monica DePriest
Dean of College Counseling
Ms. Maggie Lucas
Dean of College Counseling and English Instructor
Mr. Brian K. Smith
School Profile general contact
School Contact
250 South Rossmore Avenue, Los Angeles, California 90004; marlborough.org
Institutional
Accreditations
Accredited
Western Association of Schools and Colleges
Accredited
California Association of Independent Schools
Institutional
School Codes
CEEB Code
051710
External References
Links
College Outcomes
Top Colleges
Search & Answers
Marlborough School Frequently Asked Questions
What is the student-teacher ratio at Marlborough School?
The current school profile does not publish a normalized student-teacher ratio for Marlborough School.
How many students are enrolled at Marlborough School?
The current school profile reports about 282 students enrolled at Marlborough School.
Where is Marlborough School located?
Marlborough School is located in Los Angeles, CA.
Is Marlborough School a day school or a boarding school?
Marlborough School is a private school.
Does Marlborough School offer advanced placement (AP) courses?
Yes. The current school profile reports 17 AP courses at Marlborough School.
Which colleges show up most often for Marlborough School?
The current school profile highlights American University as one of the top reported college destinations for Marlborough School.
Does Marlborough rank students?
No. Marlborough says it does not rank students because of the small size of the senior class.
What are Marlborough’s main graduation requirements?
The profile lists 8 semesters of English; 6 semesters each of science, math, history/social sciences, and world languages through Level III; plus 4 semesters each of fine arts and physical education.
Does Marlborough offer Honors Research?
Yes. Marlborough lists Honors Research in humanities, science, and social science, and notes that the program is application-only.
Is Marlborough accredited?
Yes. Marlborough is accredited by the Western Association of Schools and Colleges and the California Association of Independent Schools.
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. | School Profile PDF | Apr 01, 2026 | AP Courses • Academic Rigor Category • Access Category • Accreditations • Advanced Course Notes • Average Class Size • More normalized profile fields |
| 2025-2026 school profile PDF resources.finalsite.net/images/v1754935515/marlborough/p39xm2jvwqxbmgawstwn/2025-2026SchoolProfile.pdf | Official Linked File | May 11, 2026 | AP Courses • Average Class Size • Matriculated • States Represented |
| Marlborough At A Glance - Marlborough School www.marlborough.org/about/marlborough-at-a-glance | Official Website Page | May 11, 2026 | Enrollment • Founded Year • Grades Served • Receiving Financial Aid • Student-Teacher Ratio |
| School History and Traditions - Marlborough School www.marlborough.org/about/history | Official Website Page | Apr 06, 2026 | Founded Year |
| Los Angeles Girls Private Middle & High School | Marlborough www.marlborough.org | Official Website Page | Apr 05, 2026 | Grades Served • Honors Program |
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.marlborough.org/about/at-a-glance | supplemental_backfill |
| official_website | www.marlborough.org/about/facts | supplemental_backfill |
| official_website | www.marlborough.org/about/fast-facts | supplemental_backfill |
| official_website | www.marlborough.org/about/quick-facts | supplemental_backfill |
| Academics | Malborough Private School - Los Angeles | www.marlborough.org/academics | supplemental_backfill |
| official_website | www.marlborough.org/admission | supplemental_backfill |
| Marlborough Admissions | Los Angeles All Girls Private School | www.marlborough.org/admissions/admissions-welcome | supplemental_backfill |
| Student Life - Marlborough School | www.marlborough.org/student-life | supplemental_backfill |
| official_website | www.marlborough.org/tuition-and-financial-aid | supplemental_backfill |
| Los Angeles College Counseling & Prep School | Marlborough School | www.marlborough.org/academics/college-counseling | existing |
| 2025-2026 school profile PDF | resources.finalsite.net/images/v1754935515/marlborough/p39xm2jvwqxbmgawstwn/2025-2026SchoolProfile.pdf | page_scan |
| Marlborough At A Glance - Marlborough School | www.marlborough.org/about/marlborough-at-a-glance | supplemental_backfill |
| School Leadership - | www.marlborough.org/about/school-leadership | supplemental_backfill |
| Special Initiatives - Marlborough School | www.marlborough.org/about/special-initiatives2024 | supplemental_backfill |
| Vision, Mission, Core Values - Marlborough School | www.marlborough.org/about/strategic-plan | supplemental_backfill |
| Los Angeles Girls Private Middle & High School | Marlborough | www.marlborough.org | existing |
| School History and Traditions - Marlborough School | www.marlborough.org/about/history | supplemental_backfill |
| Welcome from the Head of School - Marlborough School | www.marlborough.org/about/welcome-from-the-head-of-school | supplemental_backfill |
All Canonical Metrics
| Metric | Value | Evidence |
|---|---|---|
| Grades Served | 7-12 | Grades 7-12 70% of our faculty hold advanced degrees 1:4 students receive financial aid 90+ student clubs 7,000+ alumnae 12 sports & |
| Lowest Grade | - | - |
| Highest Grade | - | - |
| Postgraduate Offered | - | - |
| Boarding Status | - | - |
| Boarding Status Code | - | - |
| School Type | Private | Founded in 1889, Marlborough School is an independent school for girls located in the heart of Los Angeles. |
| School Type Code | private | Private |
| Enrollment | 282 | CLASS OF 2026 ... 92 SENIORS ... 282 UPPER SCHOOL |
| Residential Enrollment | - | - |
| Day Enrollment | - | - |
| Student-Teacher Ratio | 7 | 7:1 Teacher-Student Ratio |
| Founded Year | 1890 | founded by Mary Caswell. 1890 |
| School Leadership | - | Head of School Ms. Jennifer Ciccarelli | [email protected] |
| Key Contacts | - | Director of Enrollment Management & Collegiate Partnerships Dr. Jawaan Wallace | [email protected] |
| Accreditations | - | Marlborough is accredited by the Western Association of Schools and Colleges and the California Association of Independent Schools. |
| School Codes | - | CEEB Code: 051710 |
| AP Courses | 17 | COURSES 17 ADVANCED PLACEMENT; page 2 AP-designated offerings list includes AP English Literature and Composition, AP Art History, AP U.S. History, AP World History, AP Calculus AB, AP Calculus BC, AP Statistics, AP Chinese Language and Culture, AP French Language and Culture, AP Spanish Language and Culture, AP Computer Science A, AP 2D Art & Design, AP 3D Art & Design, AP Drawing, AP Biology, AP Environmental Science, and AP Physics C: Mechanics. |
| Average Class Size | 14 | AVERAGE CLASS SIZE14 |
| IB Program | - | - |
| Honors Program | Yes | MARLBOROUGH'S SIGNATURE PROGRAMS: HONORS RESEARCH (HUMANITIES, SCIENCE, SOCIAL SCIENCE) ... This program is by application only. |
| Advanced Course Notes | 17 Advanced Placement courses and 14 Advanced Topics courses. AP course enrollment is subject to permission from the Department Chair. Students may take additional AP courses through One Schoolhouse; these appear as OS courses on the transcript and are not included in Marlborough's GPA. Courses with an asterisk denote the most rigorous course in the discipline. | AP course enrollment is subject to permission from the Department Chair. Students who wish to challenge themselves beyond the AP curriculum may choose to take courses which are denoted below with an asterisk. As a member of One Schoolhouse, students may opt to take additional AP courses, which supplement the Marlborough School curriculum. These APs are listed as “OS” courses on the transcript and are not included in Marlborough’s GPA. *Courses with an asterisk (*) denote the most rigorous course in the discipline. |
| Faculty Count | - | - |
| College Counseling Summary | - | - |
| Testing Policy | - | - |
| Testing Policy Code | - | - |
| Average SAT | - | - |
| Average ACT | - | - |
| Matriculation Summary | 111 students from the Class of 2025 matriculated to 55 colleges in 21 states and Scotland. | 111 students from the Class of 2025 matriculated to 55 colleges in 21 states and Scotland. |
| Top Colleges | - | American University 2 students attending; Boston College 2 students attending; Boston University 2 students attending; Bowdoin College 2 students attending; Brown University 3 students attending; Colgate University 2 students attending; Columbia University 2 students attending; Cornell University 4 students attending; Dartmouth College 2 students attending; Harvard University 3 students attending; Kenyon College 3 students attending; New York University 6 students attending; Northeastern University 3 students attending; Northwestern University 3 students attending; Rice University 2 students attending; Southern Methodist University 2 students attending; Spelman College 2 students attending; Stanford University 3 students attending; University of California (Berkeley) 3 students attending; University of California (Los Angeles) 2 students attending; University of California (San Diego) 2 students attending; University of Chicago 3 students attending; University of Michigan 6 students attending; University of Southern California 5 students attending; Vanderbilt University 5 students attending; Washington University in St. Louis 2 students attending; Wesleyan University 2 students attending; Yale University 6 students attending |
| States Represented | 21 | 21 states |
| Countries Represented | - | - |
| Students of Color | - | - |
| International Students | - | - |
| Receiving Financial Aid | 1 | 1:4 students receive financial aid |
| Tuition-Free Share | - | - |
| Applicants | - | - |
| Admitted | - | - |
| Matriculated | 2025 | 2025 matriculated |
| Admit Rate | - | - |
| Yield Rate | - | - |
| Class Rank Policy | Given the small class size of the Senior Class, Marlborough does not rank its students. | CLASS RANK: Given the small class size of the Senior Class, Marlborough does not rank its students. |
| Class Rank Policy Code | - | Given the small class size of the Senior Class, Marlborough does not rank its students. |
| Weighted Grades | - | - |
| Weighted Grades Policy | - | - |
| Disciplinary Reporting | - | - |
| Boarding Model | unknown | unknown |
| Selectivity Category | limited_evidence | limited_evidence |
| Academic Rigor Category | very_high | very_high |
| Testing Policy Category | not_reported | not_reported |
| College Counseling Category | established | established |
| Student Body Reach Category | limited_evidence | limited_evidence |
| Access Category | limited_evidence | limited_evidence |
| Outcome Category | exceptional_outcomes | exceptional_outcomes |
| Signals | - | Boarding status is not reported in the supplied profile evidence.; Admissions pressure data are not reported: no applicants, admits, admit rate, yield, average SAT, or average ACT.; Academic program reports 17 AP courses and 14 Advanced Topics courses; AP enrollment requires Department Chair permission.; Students may take additional AP courses through One Schoolhouse; courses with an asterisk denote the most rigorous course in the discipline.; Honors Research in humanities, science, and social science is described as application-only.; Testing policy is not reported.; College counseling has named dedicated contacts, including multiple Dean of College Counseling roles, but no counseling program summary is reported.; Student-body geographic breadth is not reported: no states represented, countries represented, or international-student share.; Financial-aid participation is not reported: no receiving-aid percentage or tuition-free percentage.; College outcomes are detailed for the Class of 2025: 111 students matriculated to 55 colleges in 21 states and Scotland.; Reported matriculations include multiple students at highly selective institutions such as Brown, Columbia, Cornell, Dartmouth, Harvard, Stanford, University of Chicago, and Yale. |