Mullen High School (Top Ranked Private School for 2026)

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Quick Facts (2026)

Top Ranked CO School
Grades: 9-12
Enrollment: 860 students
Yearly Tuition: $22,500
Acceptance rate: 85%
Average class size: 20 students
Application Deadline: Dec. 13 / rolling
Source: ✓Verified school update

School Rankings

Mullen High School ranks among the top 20% of private schools in Colorado for:

School Facts

School Membership(s)School Assoc.

Other religious school association(s)
National Association of College Admissions Counselors

Religious Affiliation

Catholic

Grades Offered

Grades 9-12

Students By Grade

View Data

Distribution of Students By Grade
Grade	Mullen High School
9	225
10	198
11	209
12	228

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Year Founded

1931

Colors

Navy Blue, Gold

Last Day of School

Thu. May 27, 2027

Campus Size

39 acres

Student Body

Total Students

860 students

Student Body Type

Co-ed

% Students of Color

37%

State avg.: 25%

Academics & Faculty

Total Classroom Teachers

78 teachers

Student-Teacher Ratio

11:1

National avg.: 11:1

% Faculty w/Advanced Degree

33%

Average Class Size

20 students

Number of AP Courses

19 courses

List of Courses Offered

Link to List of Courses

Classroom Dress Code

Casual

Mullen embroidered Polos, khaki or navy bottoms

Tuition & Acceptance Rate

Admission Deadline

Dec. 13 / rolling

Yearly Tuition Cost

$22,500

View national tuition avg.

Tuition Notes

Does not include a $400 registration fee. Additional academic fees are set each spring.

% on Financial Aid

38%

Acceptance Rate

85%

National avg.: 82%

College Acceptance Rate

100%

Admissions Director

Lindsay Hooper

Admissions Associate

Natalie Paul '20

Application URL

Online Application

Sports

Total Sports Offered

18 sports

Sports

BaseballBasketball

CheeringCross Country

DanceDiving

Flag FootballFootball

GolfIce Hockey

LacrosseSoccer

SoftballSwimming

TennisTrack and Field

VolleyballWrestling

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School Notes

Mullen High School is a private, co-educational school in southwest Denver which provides a Catholic, college-prep curriculum since 1931.
Our Lasallian philosophy of educating is dedicated to exemplary teaching, scholastic rigor and outstanding care for all students.

School Motto: Enter to Learn, Leave to Serve
School Mascot: Mustangs

Mullen High School is a private, co-educational school in southwest Denver which provides a Catholic, college-prep curriculum since 1931. Our Lasallian philosophy of educating is dedicated to exemplary teaching, scholastic rigor and outstanding care for all students.

Sample of notable school alumni/alumnae:
- JK Scott '14 - Punter for the LA Chargers

Source: Verified school update

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Frequently Asked Questions

How much does Mullen High School cost?

Mullen High School's tuition is approximately $22,500 for private students and $300 for summer students.

What is the acceptance rate of Mullen High School?

The acceptance rate of Mullen High School is 85%, which is higher than the national average of 84%.

Who are famous alumni from Mullen High School?

Mullen High School famous alumni include: JK Scott '14.

What sports does Mullen High School offer?

Mullen High School offers 18 interscholastic sports: Baseball, Basketball, Cheering, Cross Country, Dance, Diving, Flag Football, Football, Golf, Ice Hockey, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball and Wrestling. Mullen High School is ranked as one of the top 20% of private schools in Colorado for most sports offered.

What is Mullen High School's ranking?

Mullen High School ranks among the top 20% of private schools in Colorado for: Largest student body, Most AP courses offered, Most sports offered and Oldest founding date.

When is the application deadline for Mullen High School?

The application deadline for Mullen High School is Dec. 13 / rolling (applications are due on Dec. 13 but additional applications are reviewed year-round as space permits ).

In what neighborhood is Mullen High School located?

Mullen High School is located in the Fort Logan neighborhood of Denver, CO.

School Calendar

View the Mullen High School yearly calendar below. Note key dates such as:

Event

Date

NO School - School Closed

September 07, 2026 (Monday)

NO School - School Closed

October 16, 2026 (Friday)

Thanksgiving Break

November 23, 2026 (Monday)

Thanksgiving Break

November 24, 2026 (Tuesday)

Thanksgiving Break

November 25, 2026 (Wednesday)

School Reviews

5 10/7/2020

Mullen High School has been doing an incredible job accommodating the students and teachers during the COVID 19 pandemic. It has been tough, but I appreciate the work they are doing to keep us safe and bringing our community back together.

- Posted by Administrator - Staff

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Did You Know?

The average private school tuition in Denver, CO is $15,832 for elementary schools and $19,141 for high schools (read more about average private school tuition across the country).

The average acceptance rate in Denver, CO is 84% (read more about average acceptance rates across the country).