About Mullen 

Mullen High School is a Catholic, Lasallian college preparatory school conducted in the tradition of the Christian Brothers to give a human and Christian education to the young, especially the poor, as established in our five Lasallian Core Principles.  Mullen belongs to one of the largest educational networks in the world. Lasallian schools educate over 850,000 students in 80 different countries. 

  • Founded in 1931.
  • Located on a beautiful 38 acre campus in southwest Denver.
  • Four year Theology curriculum was developed in conjunction with the Magisterium of the Catholic Church.
  • Students attend monthly all-school masses.
  • 71% of the student population is Catholic.
  • 24 athletic programs.
  • 30 club opportunities for student involvement.
  • 90% of Mullen students participate in one or more activities.
  • Mullen teachers have an average of 9 years teaching experience, with 13 alumni on staff.
  • Over 60% of Mullen faculty hold advanced degrees. 
  • Recent graduates have been accepted into 21 of the U.S. News and World Report's Top 25 colleges and universities.
  • The class of 2018 included 187 students that accumulated over $19.6 million in academic scholarships.
  • 2013 marked the beginning of a successful 1:1 iPad learning program.
  • Over 30% of Mullen students receive needs-based tuition assistance totaling over $1.5 million annually. 
  • 78 individual and team state championships.


Lasallian Core Principles

The Mullen High School Campus

The Mullen campus facilities include the Administration office building, primary classroom 200 & 300 hallways, Partners’ Hall, the Sferra Library & Research Center, the Rilko Events Center, De La Salle Chapel, Christian Brothers Hall, the Spirit Center, the Hutchison Field House, Brother Bernard Kinneavy De La Salle Stadium, Vince Greco Field & Track, Bill Swift Baseball Field, and Scavuzzo Softball Field. The campus also supports an auxiliary gymnasium, soccer and lacrosse fields, tennis courts, and ample student and visitor parking. Practice fields and a park area complete the campus and provide a restful, rural atmosphere.

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Lasallian Core Principles

Faith in the Presence of God
Belief in the living presence of God in our world. Prayer and regular reminders of God’s presence create the prevailing spirit of the school where all are taught to discover how God is active in our lives and to learn to see the world through eyes of faith.

Respect for All Persons
A concerted effort by the school to respect the dignity of all persons.

Inclusive Community
A united community where diversity is respected, where no one is left out, and where everyone finds a place.

Concern for the Poor and Social Justice
The school demonstrates a sensitivity toward the poor and those suffering from injustice.

Quality Education
An education is provided that prepares students not only for success in college, but also for success in all of their future endeavors.


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