Type
Day
School
Lakeside School
Siviq Rank#2Seattle, WA • Day
Day0 AP Courses
Enrollment
595
Student-Teacher Ratio
-
Admit Rate
14%
Reach
Local / Regional
Narrative
Profile Notes
Summary
Lakeside School’s 2025-2026 college profile describes a founded-in-1919, coeducational, independent, nonsectarian day school serving grades 5-12. The profile reports 595 upper school students, average class size of 17, 30% of students receiving financial aid, no AP or IB courses, no GPA or class rank reporting, and a five-year matriculation list showing 99% of graduates attend a four-year college or university.
College Counseling
College Counseling Office: Ari B. Worthman, Director; Frances Nan, Associate Director; Erin Foster, Associate Director; Bonnie Singh, College Counselor; Rachel Norman, Essay Specialist; Marcia Chaddock, Operations Manager; Kat Yorks, Essay Specialist.
Advanced Coursework
While AP and IB courses are not offered, most Lakeside courses meet or exceed the rigor of these curricula. Arts, Math and Science use the terms Advanced and Honors to designate their most rigorous course offerings.
Matriculation Notes
99% of graduates attend a four-year college or university; 136 institutions represented in our five-year matriculation list
Siviq Layer
Siviq Scores
Siviq Scores
Precomputed percentiles relative to similar schools. These scores are descriptive rather than judgmental.
Academic Program
4th percentile
Higher reported academic program than 4% of similar schools.
Combines advanced-course offerings, testing, and reported honors or IB signals.
Average Class Size
47th percentile
Lower reported average class size than 47% of similar schools.
Smaller reported average classes score higher within each peer cohort.
Institutional Resources
89th percentile
Higher reported institutional resources than 89% of similar schools.
Uses linked nonprofit financial capacity when a reviewed EIN match is available.
Outcomes
88th percentile
Higher reported outcomes than 88% of similar schools.
Based on reported college destinations in the current school profile.
Reach & Access
79th percentile
Higher reported reach & access than 79% 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
Admissions
- Admit Rate
- 14%
Profile
Academics
- AP Courses
- 0
- IB Program
- No
- Honors Program
- Yes
Profile
Student Body
- Receiving Financial Aid
- 30%
Profile
Policies
- Class Rank Policy
- Lakeside does not release a grade point average, rank students, or give awards or honors
Linked Nonprofit Data
Nonprofit Financials
Net Assets
$455,077,807
Tax year 2024
Net Income
$62,673,590
Latest revenue minus expenses from the school's nonprofit filing.
Total Expenses
$62,665,662
Tax year 2024
Expenses Per Student
$105,320
Calculated from total expenses divided by the current school-profile enrollment.
Location Context
Nearest
Institutional Details
People & Credentials
Institutional
Leadership
Director
Ari B. Worthman
Associate Director
Frances Nan
Associate Director
Erin Foster
Institutional
Contacts
College Counselor
Bonnie Singh
Essay Specialist
Rachel Norman
Operations Manager
Marcia Chaddock
Essay Specialist
Kat Yorks
Institutional
School Codes
CEEB CODE
481120
External References
Links
College Outcomes
Top Colleges
Search & Answers
Lakeside School Frequently Asked Questions
What is the student-teacher ratio at Lakeside School?
The current school profile does not publish a normalized student-teacher ratio for Lakeside School.
How many students are enrolled at Lakeside School?
The current school profile reports about 595 students enrolled at Lakeside School.
What grades does Lakeside School offer?
Lakeside School currently reports serving grades 5-12.
Where is Lakeside School located?
Lakeside School is located in Seattle, WA.
Is Lakeside School a day school or a boarding school?
Lakeside School is a private school.
Does Lakeside School offer advanced placement (AP) courses?
No. The current school profile does not report AP courses at Lakeside School.
How many students receive financial aid at Lakeside School?
The current school profile says about 30.0% of students at Lakeside School receive financial aid.
Which colleges show up most often for Lakeside School?
The current school profile highlights Bowdoin College as one of the top reported college destinations for Lakeside School.
Does Lakeside report GPA or class rank?
No. Lakeside says it does not release GPA, rank students, or give awards or honors.
How much financial aid support is there at Lakeside?
About 30% of students receive financial aid.
How broad is Lakeside’s student community?
The school reports students from 69 zip codes and 256 sending schools, with 55% of those sending schools being public.
Where do Lakeside graduates usually go to college?
Lakeside says 99% of graduates attend a four-year college or university, and its five-year matriculation list includes 136 institutions. The biggest reported totals include the University of Washington (Seattle), Stanford, Cornell, and USC.
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 • Admit Rate • Advanced Course Notes • Average Class Size • More normalized profile fields |
| 2025-2026 school profile PDF resources.finalsite.net/images/v1759775849/lakeside/ssdkmrrpgljmlqejws9z/CC-School-Profile.pdf | Official Linked File | May 11, 2026 | Admit Rate • Founded Year |
| Fast Facts - Lakeside School www.lakesideschool.org/about-us/fast-facts | Official Website Page | May 11, 2026 | Average Class Size • Receiving Financial Aid |
| Lakeside School: Home www.lakesideschool.org | Official Website Page | Apr 05, 2026 | Grades Served |
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.lakesideschool.org/about/at-a-glance | supplemental_backfill |
| official_website | www.lakesideschool.org/about/facts | supplemental_backfill |
| official_website | www.lakesideschool.org/about/fast-facts | supplemental_backfill |
| official_website | www.lakesideschool.org/about/quick-facts | supplemental_backfill |
| Academic Overview - Lakeside School | www.lakesideschool.org/academics/academic-overview | supplemental_backfill |
| official_website | www.lakesideschool.org/admission | supplemental_backfill |
| Overview - Lakeside School | www.lakesideschool.org/admissions/overview | supplemental_backfill |
| official_website | www.lakesideschool.org/student-life | supplemental_backfill |
| official_website | www.lakesideschool.org/tuition-and-financial-aid | supplemental_backfill |
| College Counseling - Lakeside School | www.lakesideschool.org/academics/college-counseling | existing |
| 2025-2026 school profile PDF | resources.finalsite.net/images/v1759775849/lakeside/ssdkmrrpgljmlqejws9z/CC-School-Profile.pdf | page_scan |
| Careers - Lakeside School | www.lakesideschool.org/about-us/careers | supplemental_backfill |
| Diversity, Equity, Inclusion, Belonging - Lakeside School | www.lakesideschool.org/about-us/deib | supplemental_backfill |
| Fast Facts - Lakeside School | www.lakesideschool.org/about-us/fast-facts | supplemental_backfill |
| Leadership - Lakeside School | www.lakesideschool.org/about-us/leadership | supplemental_backfill |
| Mission & Values - Lakeside School | www.lakesideschool.org/about-us/mission-and-values | supplemental_backfill |
| Custom Bus FAQs and Expectations for Riders | www.lakesideschool.org/uploaded/FAQs_and_Expectations_for_Riders_CustomBus_2025-2026_May_2025.pdf | supplemental_backfill |
| Lakeside School: Home | www.lakesideschool.org | existing |
| Transportation & Directions - Lakeside School | www.lakesideschool.org/about-us/transportation | supplemental_backfill |
All Canonical Metrics
| Metric | Value | Evidence |
|---|---|---|
| Grades Served | 5-12 | Grades 5-12 News Calendar Directory Parents & |
| Lowest Grade | 5 | 5-12 |
| Highest Grade | 12 | 5-12 |
| Postgraduate Offered | - | 5-12 |
| Boarding Status | Day | Founded in 1919, Lakeside School is a highly selective (14% admit rate), coeducational, independent, nonsectarian day-school serving students in grades 5-12. |
| Boarding Status Code | day | Day |
| School Type | Private | Founded in 1919, Lakeside School is a highly selective (14% admit rate), coeducational, independent, nonsectarian day-school serving students in grades 5-12. |
| School Type Code | private | Private |
| Enrollment | 595 | BY THE NUMBERS: 595 Upper School students |
| Residential Enrollment | - | - |
| Day Enrollment | - | - |
| Student-Teacher Ratio | - | - |
| Founded Year | 1919 | Founded in 1919 |
| School Leadership | - | Ari B. Worthman, Director — [email protected] |
| Key Contacts | - | Bonnie Singh, College Counselor — [email protected] |
| Accreditations | - | - |
| School Codes | - | CEEB CODE: 481120 |
| AP Courses | 0 | While AP and IB courses are not offered, most Lakeside courses meet or exceed the rigor of these curricula |
| Average Class Size | 17 | Average class size of 17 |
| IB Program | No | While AP and IB courses are not offered, most Lakeside courses meet or exceed the rigor of these curricula |
| Honors Program | Yes | Arts, Math and Science use the terms Advanced and Honors to designate their most rigorous course offerings |
| Advanced Course Notes | While AP and IB courses are not offered, most Lakeside courses meet or exceed the rigor of these curricula. Arts, Math and Science use the terms Advanced and Honors to designate their most rigorous course offerings. | While AP and IB courses are not offered, most Lakeside courses meet or exceed the rigor of these curricula; Arts, Math and Science use the terms Advanced and Honors to designate their most rigorous course offerings |
| Faculty Count | - | - |
| College Counseling Summary | College Counseling Office: Ari B. Worthman, Director; Frances Nan, Associate Director; Erin Foster, Associate Director; Bonnie Singh, College Counselor; Rachel Norman, Essay Specialist; Marcia Chaddock, Operations Manager; Kat Yorks, Essay Specialist. | COLLEGE COUNSELING OFFICE — Ari B. Worthman, Director; Frances Nan, Associate Director; Erin Foster, Associate Director; Bonnie Singh, College Counselor; Rachel Norman, Essay Specialist; Marcia Chaddock, Operations Manager; Kat Yorks, Essay Specialist |
| Testing Policy | - | - |
| Testing Policy Code | - | - |
| Average SAT | - | - |
| Average ACT | - | - |
| Matriculation Summary | 99% of graduates attend a four-year college or university; 136 institutions represented in our five-year matriculation list | 99% of graduates attend a four-year college or university; 136 institutions represented in our five-year matriculation list |
| Top Colleges | - | Bowdoin College 12; Brown University 13; Case Western Reserve 11; Claremont McKenna College 13; Columbia University 13; Cornell University 28; Georgetown University 18; Massachusetts Institute of Tech 17; New York University 11; Northwestern University 15; Occidental College 11; Santa Clara University 15; Stanford University 35; Tufts University 10; Univ. of California (Los Angeles) 12; University of Chicago 11; University of Pennsylvania 16; University of Southern California 22; Univ. of Washington (Seattle) 70; Washington Univ. in St. Louis 15; Yale University 14 |
| States Represented | - | - |
| Countries Represented | - | - |
| Students of Color | - | - |
| International Students | - | - |
| Receiving Financial Aid | 30 | BY THE NUMBERS: 30% of students receive financial aid |
| Tuition-Free Share | - | - |
| Applicants | - | - |
| Admitted | - | - |
| Matriculated | - | - |
| Admit Rate | 14 | Founded in 1919, Lakeside School is a highly selective (14% admit rate), coeducational, independent, nonsectarian day-school serving students in grades 5-12. |
| Yield Rate | - | - |
| Class Rank Policy | Lakeside does not release a grade point average, rank students, or give awards or honors | Lakeside does not release a grade point average, rank students, or give awards or honors |
| Class Rank Policy Code | - | Lakeside does not release a grade point average, rank students, or give awards or honors |
| Weighted Grades | - | - |
| Weighted Grades Policy | - | - |
| Disciplinary Reporting | - | - |
| Boarding Model | day_only | day_only |
| Selectivity Category | highly_selective | highly_selective |
| Academic Rigor Category | very_high | very_high |
| Testing Policy Category | not_reported | not_reported |
| College Counseling Category | extensive | extensive |
| Student Body Reach Category | regional | regional |
| Access Category | meaningful_access | meaningful_access |
| Outcome Category | exceptional_outcomes | exceptional_outcomes |
| Signals | - | Reported as a coeducational independent day-school serving grades 5-12; Profile cites a 14% admit rate and describes the school as highly selective; No AP or IB courses are offered, but the profile states most courses meet or exceed AP/IB rigor; Arts, Math, and Science use Advanced and Honors designations for the most rigorous offerings; 140+ classes offered; Class of 2025 testing ranges are very strong: SAT Q1/Q2/Q3 740/760/780 ERW and 740/780/790 Math; ACT 34/35/36; Class of 2025 includes 31 National Merit Semifinalists among 142 graduating seniors; College Counseling Office lists 7 staff: director, 2 associate directors, college counselor, 2 essay specialists, and an operations manager; 69 zip codes represented; 256 sending schools represented, with 55% public; 30% of students receive financial aid; 37 Rainier Scholars are enrolled; 99% of graduates attend a four-year college or university; 136 institutions are represented in the five-year matriculation list; Five-year matriculation includes substantial counts at highly selective colleges such as Stanford, MIT, Yale, Columbia, Penn, Cornell, Brown, Georgetown, and Northwestern |