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#144 of 188 private schools in CO

Mullen High School

High School · Denver, CO

A private high school in Denver, CO serving grades 9th – 12th.

Private

3601 S LOWELL BLVD, Denver, CO 80236

  • 12:1 student-teacher ratio

Academics

Preliminary

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 Ratio12:1
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 Length7 hours
Annual Instructional Hours1,169
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 Index44%
Community Context

Data not available

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
Enrollment765
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

Most recent published year. School vs. CO average.

Test score data not yet available for this school.

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Mullen High School sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the Denver map →

Getting around & local context

  • Walk 28Car-Dependent
  • Transit 35Some Transit
  • Bike 63Bikeable
  • City Safety: High5,773/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Denver), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$83,543

Median home value

$495,800

Median rent

$1,636/mo

College educated

31.7%

Homeownership

59.9%

Poverty rate

8.3%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 80236; this is area context, not an attendance boundary.

Programs & students

Student demographicsNCES Private School Universe Survey (PSS) (SY 2021–22)

White71.8%
Hispanic14.5%
Two or More6.5%
Asian3.1%
Black2.2%
Native American1.2%
Pacific Islander0.7%

Source: NCES Private School Universe Survey (PSS)

Compare nearby

Nearby same-level schools

3 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Sheridan High SchoolEnrollment path unverified6.29–120.7 mi293Compare →
Dsst: College View High SchoolCharter · enrollment unverified8.99–120.8 mi543Compare →
Soar AcademyEnrollment path unverified5.99–120.9 mi88Compare →

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

Charter · enrollment unverified: Potential charter option; enrollment requirements have not been verified.

Mullen High School is listed in Denver, CO; verify the current enrollment path directly.

About Mullen High School

Mullen High School is a private high school in Denver, CO, serving approximately 765 students in grades 9th-12th with a 12:1 student-teacher ratio. It holds a MySchoolScout rating of 5.5 out of 10 and ranks #144 of 188 private schools in CO.

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 ranks #144 of 188 private schools in CO.

What is Mullen High School's MySchoolScout rating?

Mullen High School has a current MySchoolScout rating of 5.5 out of 10. This score combines the level-appropriate components shown in the rating breakdown; 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.

School factsNCES Private School Universe Survey (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 County
Area population (ZIP 80236)
17,207
Area average commute
27.9 min
Area median age
37.4
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Private School Universe Survey (PSS) · SY 2021–22 · Low confidence
  • Vintage not available. Do not use this measure alone.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 80236; this does not measure the attendance area.

Evidence periods: Rating mixed/unknown input periods; assessments vintage unavailable; directory SY 2021–22

About our data · How we calculate scores

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