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Average

#149 of 188 private schools in CO

Mullen High School

High School

3601 S LOWELL BLVD, Denver, CO 80236

Private Estimated Score

Estimated academic score. This school does not have standardized test data. Based on CO statewide data. Learn more

Enrollment

765

Student-Teacher

12:1

Score

5.4

Grades

9th – 12th

Updated 2021-22

How this school compares

In Denver

#30 of 36

public schools

Colorado high schools

#19 of 24

About Mullen High School

Mullen High School stands out as one of Colorado's top-performing high schools, earning an impressive 8.1 out of 10 rating from MySchoolScout and ranking #3 out of 188 high schools statewide, placing it in the 99th percentile. This regular public high school serves 765 students in grades 9 through 12 with a favorable 12:1 student-teacher ratio, supported by 64 full-time equivalent teachers. The school's exceptional ranking reflects its commitment to academic excellence, making it a highly sought-after option for families in the Denver area.

With its manageable enrollment size, students can expect more personalized attention and stronger teacher-student relationships compared to larger institutions. Mullen High School is located in a stable, middle-class neighborhood where the median household income reaches $82,633 and home values average $460,100. The surrounding community shows strong educational values, with 34% of residents holding bachelor's degrees or higher, while maintaining a low poverty rate of just 8.7%.

This supportive environment contributes to the school's success and provides students with positive community role models. The school sits on South Lowell Boulevard in Denver's large city setting, offering students access to urban opportunities while serving a well-established residential community.

What Parents Should Know

As a private school, Mullen High School operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.

Compare to Public Schools

Beta

How Mullen High School compares to 61 public schools serving similar grades in Denver, CO

Student-Teacher Ratio
12:1
This School
vs
13.6:1
Public Avg
Avg School Size
765
This School
vs
515
Public Avg
Avg School Scout Rating
5.4
This School
vs
6.6
Public Avg

Student Demographics

White 71.8% vs 0%
Hispanic 14.5% vs 0%
Asian 3.1% vs 0%
Black 2.2% vs 0%
Mullen High School Denver Public Avg

Nearby High Schools

School Rating
Mullen High School (this school) 5.4
DSST: College View High School 9.1
Kunsmiller Creative Arts Academy 3.5
Abraham Lincoln High School 4.4
John F Kennedy High School 7.8
Respect Academy 5.3
Summit Academy 7.5
Excel Academy 4.8
Mountview Youth Service Center
Rocky Mountain Prep SMART 4.8
5280 High School 7.3
D'Evelyn Junior/Senior High School 6.5
KIPP Denver Collegiate High School 6.9
Denver Online 3.1
Florence Crittenton High School 6.2
South High School 8.5
DSST: Cedar High School 7.2
Denver Center for International Studies 5.9
Girls Athletic Leadership School High School 7.8
West High School 4.7
Colorado High School Charter 7.5

Showing 20 of 61 schools. View all schools in Denver

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in CO.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
B- 4.8 / 10
View breakdown
Student-Teacher Ratio 12:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
C+ 4.0 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,169
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
A- 7.7 / 10
View breakdown
Diversity Index 44%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
B- 5.2 / 10
View breakdown
Enrollment 765
View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in CO

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

White 71.8%
Hispanic 14.5%
Two or More 6.5%
Asian 3.1%
Black 2.2%
Native American 1.2%
Pacific Islander 0.7%

Source: NCES Private School Survey (PSS)

Location

3601 S LOWELL BLVD, Denver, CO 80236

Nearby Alternatives

Families considering Mullen High School may also want to explore other high schools in the area. DSST: College View High School (rated 9.1/10, 0.8 miles away), which scores notably higher. Another option is SOAR Academy (rated 7.0/10, 0.9 miles away, in nearby Englewood), which scores notably higher. Additionally, HUMANEX ACADEMY (rated 6.6/10, 1.6 miles away, in nearby Englewood), which scores notably higher. For more schools in Denver, see our Denver schools guide .

Nearby Schools

20 within 2.0 mi
School Distance Rating
Fort Logan Northgate Denver 0.5 mi 5.5
Sheridan High School Englewood 0.7 mi 4.6
Sabin World School Denver 0.7 mi 8.5
DSST: College View Middle School Denver 0.8 mi 5.7
DSST: College View High School Denver 0.8 mi 9.1
Early Childhood Education Center Englewood 0.9 mi 7.2
SOAR Academy Englewood 0.9 mi 7.0
Alice Terry Elementary School Englewood 1.1 mi 6.9
Gust Elementary School Denver 1.1 mi 8.7
Kaiser Elementary School Denver 1.2 mi 7.7
College View Elementary School Denver 1.3 mi 6.1
Doull Elementary School Denver 1.5 mi 8.6
Bear Valley International School Denver 1.3 mi 6.4
Kunsmiller Creative Arts Academy Denver 1.7 mi 3.5
Abraham Lincoln High School Denver 1.8 mi 4.4
HUMANEX ACADEMY Englewood 1.6 mi 6.6
Compass Academy Denver 1.8 mi 5.8
Traylor Academy Denver 1.5 mi 4.3
Respect Academy Denver 1.8 mi 5.3
NOTRE DAME PARISH SCHOOL Denver 2.0 mi 6.1

Neighborhood Census ACS (2019-2023)

Census data for ZIP 80236 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$83,543

Median Home Value

$495,800

Median Rent

$1,636/mo

Population

17,207

College Educated

31.7%

Homeownership

59.9%

Avg Commute

27.9 min

Poverty Rate

8.3%

Median Age

37.4

Community Profile

The community surrounding Mullen High School has a median household income of $83,543. It is an area where 32% of adults hold a bachelor's degree or higher. The median home value in the area is $495,800, with a median rent of $1,636/month. The local poverty rate of 8.3% is relatively low. The average commute for residents is 28 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Englewood High School Englewood, CO 5.4
Pomona High School Arvada, CO 5.4
Severance High School Severance, CO 5.4
Valley High School Gilcrest, CO 5.5
Academy of Las Animas Online School Pueblo, CO 5.3
Eaton High School Eaton, CO 5.3

Frequently Asked Questions

Common questions about Mullen High School

What grades does Mullen High School serve?

Mullen High School serves students in grades 9th through 12th.

How many students attend Mullen High School?

Mullen High School has an enrollment of approximately 765 students.

What is the student-teacher ratio at Mullen High School?

The student-teacher ratio at Mullen High School is 12:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does Mullen High School rank in CO?

Mullen High School is ranked #149 out of 188 private schools in CO.

What is Mullen High School's MySchoolScout rating?

Mullen High School has a composite rating of 5.4 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

Is Mullen High School a private school?

Yes, Mullen High School is a private coeducational school with a Roman Catholic affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is Mullen High School a religious school?

Mullen High School has a Roman Catholic religious affiliation.

11 schools nearby View map →

Neighborhood Context

City Safety
High (5,773/100K)

FBI UCR 2024. City-level (Denver). Data >1 year old.

Quick Facts NCES PSS (SY 2021-22)

Grades
9th – 12th
Enrollment
765
Gender Split
50% M / 50% F
Student-Teacher Ratio
12:1
Teachers (FTE)
64
Type
private
Coed Status
coed
Affiliation
Roman Catholic
School Day
7 hours
Days Per Year
167 days
Setting
Large City
County
DENVER
Data Year
2022–2023

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

Related reading

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