High School

The Lakeside School Is At The Top of Seattle Private High School Elite College Placement Index

By Data Team | Published July 15, 2026

The latest matriculation data for the Seattle metropolitan area places The Lakeside School at the #1 overall position in our Seattle Private High School Elite College Placement Index. Across our most recent evaluation cycles, the school achieved an exceptional 45% Top 25 (T25) National University yield alongside a perfect 10.0 Readiness score, establishing it as the top-performing preparatory institution in the Pacific Northwest.

This indicates that Lakeside provides a highly verified, dominant pathway to selective national universities, specifically funneling significant student volumes into Stanford, USC, and Ivy+ programs, while maintaining strong enrollment at top-tier in-state public research hub at the University of Washington.

Summary of Findings

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Top-Tier Placement (#1 Seattle Private): Lakeside performs strongly in our localized methodology, logging a benchmark-setting ECPI score of 110.57. This is driven by their 45% T25 rate and a 15% Top 15 Liberal Arts (T15 LAC) matriculation rate.
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The Stanford & Ivy+ Pipeline: Between 2021 and 2025, 35 students matriculated to Stanford University, balancing robust Ivy+ placements such as Cornell (28), MIT (17), UPenn (16), and Yale (14).
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Commitment to Financial Aid: Lakeside awarded over $10 million in need-based tuition aid for the 2025-2026 school year. This operational commitment ensures that 30% of the student population receives robust financial assistance, expanding socio-economic access.

The Big Picture: Lakeside's Independent Ecosystem

In the highly competitive Seattle private school landscape, fueled by a dense concentration of global technology talent, institutions continuously vie to distinguish themselves through advanced academics and sophisticated collegiate counseling. The Lakeside School differentiates itself by maintaining a commitment to its mission: developing creative minds, healthy bodies, and ethical spirits needed to contribute wisdom and compassion to a global society.

Operating as an independent, coeducational day school for grades 5-12, Lakeside insists on an environment anchored in trust, integrity, and inclusivity. Our data suggests this character-driven philosophy aligns remarkably well with the holistic review processes implemented by highly selective universities nationwide.

Rigorous Environment: The school operates across two campuses with an average class size of 17 students, allowing educators to cultivate an intimate, dynamic academic program.
Scale and Reach: With 891 total students (296 in Middle School and 595 in Upper School), Lakeside operates at a scale that allows for over 140 unique Upper School classes and 25 varsity sports teams.

How We Measure: The Data Behind the Ranking

Matriculation vs. Acceptance

In accordance with Chicardgo School's official methodology, we explicitly evaluate verified matriculation (where students actually enroll and attend) rather than mere collegiate acceptance rates. For our Seattle-specific index, we apply a tailored weighting system to account for the significant influence of top-tier public universities alongside Elite (Ivy+, T25, T15 LAC) placements.

Seattle ECPI Score Components & Weighting
ECPI Component	Weight	Analytical Description
T25 National University Matriculation	35%	Based on the percentage of graduates attending a Top 25 National University.
T15 Liberal Arts College Matriculation	15%	Based on the percentage of graduates attending a Top 15 Liberal Arts College.
Top Public Matriculation	20%	Based on the percentage of graduates attending premier in-state public research institution(e.g., UW Seattle).
Other 4-Year University Matriculation	10%	Based on the percentage of graduates attending other prominent 4-year institutions.
College Readiness Score	20%	An internal diagnostic score reflecting curricular rigor and holistic cohort preparedness.

Inside the Campus: The Lakeside Experience

Located in northern Seattle, Lakeside operates across two distinct campuses, providing a comprehensive pipeline from Middle School through high school graduation. The institutional culture is deeply rooted in a Statement of Community Expectations, which centers on six shared values: trust, integrity, respect, engagement, wellness, and inclusivity.

Geographic Footprint: 14050 1st Avenue NE, Seattle, WA

Table 1: Structural Baselines & Fast Facts (2025-2026 Data)
Institutional Metric	The Lakeside School Profile
Total Enrollment	891 Students (595 Upper School, 296 Middle School)
Educational Backgrounds	Drawn from 256 schools (55% Public, 36% Independent, 9% Religious, <1% Home)
Diversity Profile	32% Asian, 28% White, 19% Multiracial, 11% Black, 5% Declined, 4% Hispanic, 1% Middle Eastern
Extracurriculars	25 Varsity Teams, 40+ Arts Performances/Retreats annually. 100% of MS take arts; 80%+ participate in US.

Architecture of Academic Rigor

Lakeside provides a highly rigorous curriculum featuring over 140 unique classes in the Upper School alone. The academic model shifts responsibility for learning toward the students, fostering deep intellectual engagement.

With an average class size capped at just 17 students, the pedagogical approach guarantees personalized faculty instruction, which frequently translates into the sophisticated critical thinking skills required by top-tier universities.

Exceptional Readiness Metrics

Achieving a perfect 10.0 out of 10 in our Readiness Score, Lakeside demonstrates a statistically notable aptitude level among its student body.

Broad Participation: Over 80% of students participate in the arts, and over 80% play at least one sport.
Methodology Note: This level of holistic development, combining intense academic focus with broad extracurricular leadership, aligns seamlessly with the admission rubrics at elite national universities.

Access & Affordability: Investing across the Pacific Northwest

A key factor in Lakeside's consistent presence at the top of the Chicardgo ECPI rankings is its robust financial resources. The school actively addresses socio-economic barriers to ensure the enrollment of highly capable academic talent across the Pacific Northwest.

Financial Aid Distribution

For the 2025-2026 school year, Lakeside awarded over $10 million in need-based tuition aid, supplemented by an additional $600,000+ for non-tuition costs. Fully 30% of the student body receives financial aid.

This extensive aid program supports families with incomes ranging from $15,000 to over $250,000. For families receiving aid, the average tuition paid drops significantly to just $11,818, compared to the sticker price. Aid extends beyond tuition to cover food, books, buses, and a mandatory laptop program.

Tuition & Expense Structure (2025-2026)

Tuition for Grades 5-12 (Includes Lunch)	$49,350
Average Tuition for Aid Recipient	$11,818
Custom Bus Route (Annual Pass)	$3,750
Upper School Laptop (Lenovo ThinkPad)	$1,705

Financial Aid Assessment by Income Bracket

Income Bracket	Institutional Commitment Policy
Less than $75,000	Families will pay annual tuitions no higher than $250 each year, with support for lunch and bus transport.
$75,000 - $110,000	On average, families contribute just 6% of gross total income toward all tuitions.
$110,000 - $200,000	Evaluated based on debt/assets; families typically contribute 4% to 12% of total income.
Over $200,000	Represent 20% of aid recipients, largely supported through Lakeside's multiple-tuition policy considerations.

T25 & Top Public Pipeline: A Proven Track Record

In the index covering recent graduation data, Lakeside secures a striking 45% modeled score in the T25 category, supplemented by a 15% Top 15 LAC rate and a 10% Top Public rate. With graduating classes averaging roughly 145–150 students, the volume of elite placements is highly significant.

Estimated Matriculation Density

45%

Total T25 Index Score

10%

Top Public Index Score

15%

T15 LAC Index Score

30%

Other 4-Year University

The National Selective Draw

Lakeside's pipeline to the top tier of American higher education is exceptionally competitive in the Northwest. Over the 2021-2025 period, Stanford and Cornell were leading destinations.

Stanford University 35 (4.8%)
Cornell University 28 (3.9%)
USC 22 (3.0%)
Georgetown University 18 (2.5%)
Massachusetts Institute of Tech 17 (2.3%)
Univ. of Pennsylvania 16 (2.2%)
Yale University 14 (1.9%)
Brown University 13 (1.8%)
Columbia University 13 (1.8%)

Top Tier Public Institutions

While private universities dominate the list, Lakeside maintains a highly robust pipeline to the flagship University of Washington, securing prominent placements within its competitive direct-admit programs.

Univ. of Washington (Seattle) 70 (9.7%)
UCLA 12 (1.7%)
Cal Poly SLO 9 (1.2%)
UC San Diego 8 (1.1%)
UC Berkeley 6 (0.8%)

The Liberal Arts Advantage

A significant 15% of the index score is driven by Lakeside's strong track record in placing students into Top 15 Liberal Arts Colleges (LAC). This reflects a sophisticated counseling strategy that successfully matches students with intimate, seminar-style undergraduate environments.

Elite LAC Enrollments (2021-2025)

Bowdoin College (T15) 12 (1.7%)
Claremont McKenna College (T15) 11 (1.5%)
Carleton College (T15) 9 (1.2%)
Middlebury College (T15) 9 (1.2%)
Williams College (T15) 8 (1.1%)
Amherst College (T15) 7 (1.0%)

The Core Pipeline: Where Lakeside Graduates Go

Our quantitative team cross-referenced the official school profile with the dataset provided in lakeside school seattle Matriculation list to compile institutions where 10 or more graduates enrolled over the five-year window.

Lakeside Official Placements (>10 Matriculations, 2021-2025)
Institution	5-Year Enrollments	Est. Cohort %	ECPI Category
Univ. of Washington (Seattle)	70	9.7%	Top Public
Stanford University	35	4.8%	Ivy+ / T25 National
Cornell University	28	3.9%	Ivy+ / T25 National
University of Southern California	22	3.0%	T25 National
Georgetown University	18	2.5%	T25 National
Massachusetts Institute of Tech	17	2.3%	Ivy+ / T25 National
University of Pennsylvania	16	2.2%	Ivy+ / T25 National
Northwestern University	15	2.1%	T25 National
Washington Univ. in St. Louis	15	2.1%	T25 National
Santa Clara University	15	2.1%	Top 50 Broad
Yale University	14	1.9%	Ivy+ / T25 National
Brown University	13	1.8%	Ivy+ / T25 National
Columbia University	13	1.8%	Ivy+ / T25 National
Bowdoin College	12	1.7%	T15 LAC
Univ. of California (Los Angeles)	12	1.7%	T25 National / Top Public
University of Chicago	11	1.5%	T25 National
New York University	11	1.5%	T25 National
Claremont McKenna College	11	1.5%	T15 LAC
Case Western Reserve	11	1.5%	Top 50 Broad
Occidental College	11	1.5%	LAC Broad
Tufts University	10	1.4%	Top 50 Broad

* Estimated Cohort % is calculated based on an approximate aggregate total of 725 graduates over the 5-year evaluation window.

A Broad Reach: From Ivy+ to Specialized Programs

Between 2021-2025, Lakeside demonstrated consistent, though lower-volume, placements across a multitude of other highly selective institutions. Below is a curated selection of those placements.

* Institutions highlighted in bold represent highly selective universities tracked within the Chicardgo ECPI core categories (Ivy+, Top 25 National, and Top 15 Liberal Arts Colleges).

Harvard University (9)

Dartmouth College (9)

Duke University (9)

Middlebury College (9)

Carleton College (9)

Cal Poly SLO (9)

Johns Hopkins University (8)

Carnegie Mellon University (8)

Williams College (8)

Pomona College (8)

Northeastern University (8)

Amherst College (7)

Colorado College (7)

Wake Forest University (7)

Wellesley College (7)

Princeton University (6)

Vanderbilt University (6)

UC Berkeley (6)

Colby College (6)

Harvey Mudd College (5)

Swarthmore College (5)

Tulane University (5)

Barnard College (5)

University of St Andrews (5)

Counseling Strategy: Students at The Heart

Lakeside's primary goal in the college admission process is to guide each student toward a suitable university match using an exceptionally well-resourced department.

Individualized Guidance

Under the leadership of Ari Worthman, Director of College Counseling, the school operates a highly specialized five-person counseling team with more than 50 years of collective admissions experience. By restricting their responsibilities solely to college admissions, the school maintains an impressive 1-to-37 counselor-to-senior ratio, ensuring dedicated, individualized attention.

"Students are at the heart of all the counselors do, and paramount is ensuring that each student presents the strongest applications possible and enrolls at a school where he or she will thrive."
— Ari Worthman

Institutional Reach

Lakeside leverages significant institutional gravity. Annually, the campus hosts more than 100 college admission officers from around the world. These intimate gatherings grant representatives a close-up view of Lakeside’s rigor, securing the school's reputation in highly selective admissions offices globally.

Family Communication

The college search is treated as a collaborative family endeavor. Parents and guardians receive continuous updates via regular coffees, financial aid events, and the "Inside Lakeside" newsletter. Starting junior year, families receive targeted communications and gain access to comprehensive resources through the school's dedicated Veracross portal.

Alumni Networks and Legacy

As a leading preparatory institution in the Pacific Northwest, The Lakeside School boasts an alumni network populated by global innovators, celebrated artists, and industry pioneers. Recent graduating cohorts have produced leading technologists, national journalists, and top executives, building upon a century-long legacy of academic and extracurricular excellence.

Notable Featured Alumni

Class of '73

Bill Gates

Co-founder of Microsoft and the Bill & Melinda Gates Foundation. Recognized globally as a pioneer of the microcomputer revolution.

Class of '71

Paul Allen

Co-founder of Microsoft, investor, and philanthropist. Founder of Vulcan Inc. and former owner of the Seattle Seahawks.

Class of '19

Corbin Carroll

Professional baseball player for the Arizona Diamondbacks. 2023 MLB All-Star and National League Rookie of the Year.

Class of '82

Annie Leonard

Environmental activist, creator of the documentary The Story of Stuff, and executive director of Greenpeace USA.

Class of '96

Marjorie Liu

New York Times best-selling author and comic book writer, best known for works like Monstress and Marvel's Astonishing X-Men.

Class of '94

Seth Gordon

Acclaimed film director, producer, and screenwriter known for The King of Kong, Horrible Bosses, and producing Undefeated.

Class of '05

Daniel Kan

Tech entrepreneur and founder/COO of Cruise Automation, an autonomous vehicle company acquired by General Motors for $1 billion.

Class of '68

Craig McCaw

Pioneer of the cellular phone industry and founder of McCaw Cellular Communications, which became part of AT&T Mobility.

How Lakeside Stacks Up: Regional Competition

To contextualize the data achieved by Lakeside, we evaluate its direct competitors in the Seattle private school market. Regional index metrics were sourced directly from our internal database.

The Overlake School

Ranked #2, Overlake serves as a formidable counterpart, yielding a 35% T25 rate and an identical 15% T15 LAC rate.

Eastside Preparatory School

Ranked #3, Eastside Prep maintains a strong 32% T25 placement rate, focusing heavily on STEM integration and Eastside tech demographics.

University Prep

Ranked #4, UPrep yields a solid 22% T25 rate but slightly outperforms Lakeside in pure LAC matriculation with a 16% T15 LAC yield.

The Takeaway

Synthesizing the data, Lakeside's established position at the top of the Seattle market is supported by three structural factors:

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Exceptional Institutional Reputation: Placing 35 students at Stanford and 17 at MIT over a 5-year span requires more than just high test scores; it indicates deep institutional trust between Lakeside's counseling office and elite admission deans.
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Financial Accessibility as a Driver of Excellence: By subsidizing 30% of its population through a $10M+ aid budget, Lakeside actively curates an intellectually capable student body unconstrained by a $49,350 sticker price.
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Counseling Resources: Maintaining a 1-to-37 counselor ratio dedicated entirely to the admissions process provides Lakeside students with a significant strategic advantage over public school peers.

FAQ: The Lakeside Evaluation

Lakeside achieves the #1 ranking by producing a 45% Top 25 (T25) matriculation yield, a 15% T15 LAC yield, and a perfect 10.0 Readiness Score. Their overall ECPI score of 110.57 makes them the highest-performing institution in the Seattle Metro area.

Our data models indicate a high density of elite placements. Over the 2021-2025 matriculation cycle, Lakeside generated 35 enrollments at Stanford, 28 at Cornell, 17 at MIT, 16 at UPenn, and 14 at Yale.

Lakeside commits over $10 million annually to need-based financial aid. Currently, 30% of the student body receives financial support, with the average aid package for a recipient standing at $11,818, bridging the gap across a wide range of income levels.

Lakeside has a highly specialized five-person counseling team boasting a 1-to-37 counselor-to-senior ratio. Their sole responsibility is college counseling, backed by over 50 years of collective admissions experience.

Lakeside’s institutional culture is explicitly anchored in its Statement of Community Expectations, which emphasizes six core pillars: trust, integrity, respect, engagement, wellness, and inclusivity.

The student body is exceptionally diverse academically and geographically, drawn from 256 different schools across the region. Roughly 55% of incoming students join from public schools, 36% from independent schools, and 9% from religious schools.

Lakeside maintains an intimate learning environment with an average class size capped at just 17 students, allowing for highly personalized instruction across its 140+ Upper School courses.