St. John's Northwestern Academy (Top Ranked Private School for 2026-27)

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Quick Facts (2026-27)

Top Ranked WI School
School Type: Special Program Emphasis
Grades: 7-12
Enrollment: 221 students
Yearly Tuition: $45,000
Average class size: 12 students
Application Deadline: None / Rolling
Source: ✓Verified school update

School News

St. John’s Northwestern Announces Alumnus Brandin Podziemski as 2026 Commencement Speaker - 05/05/2026
St. John's Northwestern is proud to welcome back one of its own, Brandin Podziemski, as the keynote speaker for the Academy's 2026 Commencement Ceremony.
St. John’s Northwestern Students Earn Top Honors at State Solo & Ensemble Festival - 04/29/2026
Three students from St. John's Northwestern delivered standout performances at the Wisconsin School Music Association State Solo & Ensemble Festival this past Saturday, earning top placements at the highest ...morelevel of competition. hide
St. John’s Northwestern Raiders Achieve Historic 3rd Place Finish at National Championship - 04/21/2026
St. John's Northwestern's JROTC Raiders team has earned its highest finish in school history, placing 3rd overall in the Masters Division at the 2025 U.S. Army JROTC National Raider Challenge ...moreheld at Fort Knox. hide
The Fine Point: A Legacy Taking Shape | March 2026 - 03/26/2026
As March closes, there is a natural opportunity to reflect on the contributions of women throughout history. At St. John's Northwestern, it is also a moment to recognize something taking ...moreshape within our own community. hide
St. John’s Northwestern Corps of Cadets Earns Honor Unit with Distinction - 03/12/2026
St. John's Northwestern proudly announces that its JROTC Program has earned the prestigious designation of Honor Unit with Distinction following a recent on-campus JROTC Program Accreditation inspection.
Debate Team Earns 1–1 Finish at WISDAA Meet, Sets School Record for State Qualifiers - 02/12/2026
The St. John's Northwestern Debate Team battled to a hard-fought 11 finish at the Wisconsin Interscholastic Speech & Dramatic Arts Association (WISDAA) meet on February 2, showcasing resilience, preparation, and ...morecompetitive excellence. hide
SJN Senior Aidan Richards Receives Prestigious “Service Above Self” Award and Scholarship - 10/29/2025
DELAFIELD, Wis. St. John's Northwestern (SJN) senior Aidan Richards has been awarded the Lake Country Rotary Club's "Service Above Self" Award and Scholarship, a distinction recognizing students who exemplify ...moreexceptional leadership, strong character, and a lifelong commitment to service. hide
SJN Seniors Earn Over $7 Million in Offered College Scholarships - 10/29/2025
DELAFIELD, Wis. St. John's Northwestern (SJN) is proud to announce that the Class of 2025 has earned more than $7.1 million in offered scholarships, marking a historic year of ...moreachievement. hide
SJN Claims Niche Top Ranking For Christian High Schools in Wisconsin For Third Year In A Row - 10/29/2025
DELAFIELD, Wis. In the recently released Niche 2026 Best Schools Rankings, St John's Northwestern once again came out on top in a number of categories, most notably the Best ...moreChristian High Schools in Wisconsin for the third year in a row! hide
...read more

School Rankings

St. John's Northwestern Academy ranks among the top 20% of private schools in Wisconsin for:

School Facts

School Type

School with Special Program Emphasis

Religious Affiliation

Episcopal

Grades Offered

Grades 7-12

Students By Grade

View Data

Distribution of Students By Grade
Grade	St. John's Northwestern Academy
7	7
8	17
9	27
10	37
11	67
12	66

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Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

Year Founded

1884

Summer School Offered

Yes

Summer Program Details

View Summer Program Details

School Calendar

View School Calendar

Student Body

Total Students

221 students

Student Body Type

Co-ed

% Students of Color

25%

State avg.: 35%

Academic Profile

Total Classroom Teachers

35 teachers

Student-Teacher Ratio

6:1

National avg.: 11:1

% Faculty w/Advanced Degree

35%

Average Class Size

12 students

Average SAT score

1110

(Out of 1600)

Average ACT score

(Out of 36)

Matriculation DataMatric. Data

View Matriculation Data

Classroom Dress Code

Formal

Uniform

Number of AP Courses

10 courses

List of Courses Offered

Link to List of Courses

Advanced Courses

AP Calculus ABAP Chemistry

AP ChineseAP Computer Science

AP Human GeographyAP Language & Composition

AP PhysicsAP Psychology

AP SeminarAP World History

School Membership(s)School Assoc.

Association of Military Colleges and Schools of the United States (AMCSUS)
National Association of Independent Schools (NAIS)
The Association of Boarding Schools (TABS)
Independent Schools Association of the Central States (ISACS)

Tuition & Financial Aid

Admission Deadline

None / Rolling

Yearly Tuition Cost

$45,000

View national tuition avg.

Tuition Notes

7-Day Boarding: $56,300 5-Day Boarding: $46,100 Day School: $24,800 International: $62,700

Summer Program Cost

$1,500

Summer Program Cost Notes

On average depending on program.

% on Financial Aid

25%

Average Financial Aid Grant

$7,000

College Acceptance Rate

100%

Admissions Director

Juan Garcia

Admissions Associate

Juan Garcia

Application URL

Online Application

Sports

Total Sports Offered

11 sports

Sports

ArcheryBaseball

BasketballCross Country

Colors

White, Black, Red, Purple, Red/Black/White

School Mascot

Lancer

Extracurriculars

Total ExtracurricularsTotal Extra-curric.

11 extracurriculars

ExtracurricularsExtra-curric.

Club or Organization:

Boy ScoutsChess Club

Debate ClubDECA Club

Model UNRobotics Team

Ski Club

Arts and Music Programs:

BagpipesBand

Trumpet

Recreational Athletic Programs:

Raiders

School Notes

At SJN, our history and foundation center on providing each student a safe, structured environment as a foundation for life.
Being away from home, preparing to make the most of each day, being personally responsible for making your bed, cleaning your room, folding your clothes, looking sharp and in uniform, and maintaining a rigorous schedule are the life skills that prepare our students to be high achievers for whatever they aspire to in the future.
The dormitories are secure with adult supervision, and our students develop fundamental academic habits through our required evening supervised study halls with peer and tutor resources available, and an advantageous 12-to-1 student-teacher ratio that instills high academic achievement.
Experience the difference that is St. John's Northwestern.

St. John's Northwestern (SJN) is Wisconsin's premier co-educational college preparatory boarding and day school for grades 7-12 and post-graduate. Established in 1884, the academy boasts a breathtaking campus with historical buildings throughout, featuring modern renovations.

Conveniently located in charming Delafield, Wis., SJN is dedicated to preparing each student for success as tomorrow's global leaders. SJN empowers young men and women to achieve their fullest potential by blending rigorous academics, innovative programs, and character-building leadership opportunities.

Our signature programs-Engineering, Robotics, Aviation, JROTC Leadership, DME Basketball, and the AP Capstone Program-ignite curiosity and foster skills that prepare our students for success in an ever-evolving world.

Our dedicated faculty and staff are committed to providing individualized attention to every student in a safe, structured environment that provides a foundation for life. The academic and leadership curricula are complemented by a strong athletic program, character development, and a range of extracurricular opportunities.

Average class size: 12
Average enrollment: 240
AP Capstone Diploma Program with 10 AP classes offered
Earn 50+ college credits with dual enrollment courses
100% college acceptance rate
Average 8.2 millionin scholarship awards and offers
Nearly 40 competitive, academic, and special interest clubs like DECA, Model UN, and competitive robotics teams.

Sample of notable school alumni/alumnae:
- Daniel Gerber 1916 - Founder and president of Gerber Baby Foods
- Howard Woodin 1918 - Member of Marquette University Hall of Fame and Green Bay Packers Hall of Fame for football
- Spencer Tracy 1919 - Distinguished actor; Academy Award winner; appeared in over 70 films
- Arthur Wermuth 1932 - Major, U.S. Army; World War II hero
- Edward Noble 1946 - Entrepreneur; developer; and manufacturer; served as a member of President Ronald Regan's staff
- C. Roosevelt Boettiger 1948 - Grandson of President Franklin D. Roosevelt; U.S. delegate to the United Nations
- William J. Janklow 1954 - Governor of South Dakota for four terms, longer than anyone in state history
- Ty Warner 1962 - Founder and C.E.O. of Beanie Babies, Inc., a leader in the toy industry
- Jay Graf 1966 - Founder and C.E.O. of Guidant Corp., a leader in the heart monitoring field
- Martin Torrijos Espino 1981 - Former President of Panama from 2004 to 2009

Source: Verified school update

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Frequently Asked Questions

How much does St. John's Northwestern Academy cost?

St. John's Northwestern Academy's tuition is approximately $45,000 for private students and $1,500 for summer students.

Who are famous alumni from St. John's Northwestern Academy?

St. John's Northwestern Academy famous alumni include: Daniel Gerber 1916, Howard Woodin 1918, Spencer Tracy 1919, Arthur Wermuth 1932, Edward Noble 1946, C. Roosevelt Boettiger 1948, William J. Janklow 1954, Ty Warner 1962, Jay Graf 1966 and Martin Torrijos Espino 1981.

Does St. John's Northwestern Academy offer a summer program?

Yes, St. John's Northwestern Academy offers a summer program. Visit their summer school page for more information.

What sports does St. John's Northwestern Academy offer?

St. John's Northwestern Academy offers 11 interscholastic sports: Archery, Baseball, Basketball, Cross Country, Drill Team, E-sports, Football, Riflery, Soccer, Tennis and Track and Field. St. John's Northwestern Academy is ranked as one of the top 20% of private schools in Wisconsin for most sports offered.

What is St. John's Northwestern Academy's ranking?

St. John's Northwestern Academy ranks among the top 20% of private schools in Wisconsin for: Most sports offered, Most extracurriculars offered and Oldest founding date.

When is the application deadline for St. John's Northwestern Academy?

The application deadline for St. John's Northwestern Academy is rolling (applications are reviewed as they are received year-round).

School Reviews

5 5/23/2026

St. John''s Northwestern Academy has been an outstanding experience for our daughter. Being a private school with tuition, it has been well worth it any monetary sacrifice. Since starting in January, she has exceeded all of our expectations academically, personally, and socially. The structure, leadership, and supportive environment have helped her grow in confidence and maturity in a very short time. She has become confident, and so much more happier attending school. We are extremely grateful for the positive impact the school has had on her development and future.

- Posted by Parent - Mrs. Jennifer Frizzell

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Did You Know?

The average private school tuition in Waukesha County, WI is $9,081 for elementary schools and $18,204 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Waukesha County, WI is 93% (read more about average acceptance rates across the country).