Mullen High School

Mullen High School

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John Baptist de La Salle, Patron of Teachers of Youth.

Mullen High School is a Lasallian, Catholic, 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. Founded in 1931 and accredited by the North Central Association of Secondary Schools, Mullen provides a rich secondary education to our students i

Photos from Mullen High School's post 06/01/2026

As we wrapped up the school year, we had the honor of recognizing Mrs. Patricia Campbell. Patti gave 12 years and over $1.5 million in billable hours. She helped build and lead our Mock Trial team from the ground up alongside Tammy Christensen, shaping the next generation of critical thinkers, advocates, and leaders. Her gift of time, expertise, and passion has left a permanent mark on this school.

As St. John Baptist de La Salle reminds us: "It is a great art to know how to guide young people." Mrs. Campbell didn't just know that art; she mastered it.

In recognition of her extraordinary contribution, we are proud to dedicate Welter Hall N202 in her name. A small gesture for an immeasurable impact.

Thank you, Patti.

05/29/2026

Summer is HERE!!

Starting June 1st, Mullen will be on summer hours. The main campus and front desk will be open Monday through Thursday from 9am-2pm throughout the summer. We will be closed on Fridays and the week following July 4th to give our staff some time with to rest and reenergize.

05/29/2026

Congratulations to the 91st Graduating Class of Mullen High School!

196 Graduates
Accepted into 249 Colleges
Over $35 Million in Scholarships Received
20,100 hours of service to their community

Truly a class that lived out the motto Enter to Learn, Leave to Serve.

Congratulations Class of 2026! We cannot wait to see all that you achieve.

Mullen Info is live! 05/26/2026

We hope you will join us live as the Class of 2026 graduates today from the Boettcher Center for the Performing Arts. Congrats to our newest Mustang Mullen High School Alumni

Mullen Info is live! Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

05/25/2026

Today, we honor and thank all the Mustangs who answered the call to serve our country with courage, sacrifice, and faith. Honoring the brave Mustangs who have served our country with faith, courage, and sacrifice. Your legacy continues to inspire the next generation of Lasallian leaders.

Enter to Learn, Leave to Serve

Photos from Mullen High School's post 05/19/2026

The best Father’s Day memories start on the course.

Only a few spots remain. Visit www.mullenhigh.com/signup. Golf Classic and celebrate with the dads, sons, and Mustang family who make this community special.

Only a few spots remain, visit www.mullenhigh.com signup.

05/19/2026

Happy Finals Week, Mustangs!

We wanted to send a quick reminder that exam days are shorter than the normal class day. For those riding the Mullen Buses home after exams, the buses will depart campus at:

11:00am on Tuesday and Thursday
12:30pm on Wednesday

Check the app or reach out to [email protected] for specific drop off times at your stop.

Check the app or reach out to [email protected] for specific drop-off times at your stop. [email protected] for more details. More info coming to your inbox soon for details on purchasing.

Good luck on Finals!

05/14/2026

A round of golf at Arrowhead is good. A round with a Player Pack? Even better.

Make the most of your Brother Bernard Golf Classic experience with mulligans, raffle tickets, Closest to the Pin string, Tutu Hole access, and this year’s custom leatherette pouch.

More fun. More chances to win. Be sure to grab one before tee time.

Purchase your Player Pack today at www.mullenhigh.com!

Photos from Mullen High School's post 05/13/2026

Tonight was our All-School Awards, a celebration of what makes the Mullen community so extraordinary!

As the end of the school year quickly approaches, tonight gave us a chance to pause, reflect, and celebrate every member of the Mullen family. Together, we continue to live out the words:ery award recipient tonight! Your hard work, commitment, and dedication do not go unnoticed, and we are so proud of all you have accomplished!

A huge thank you goes out to the parents, families, friends, and support systems who encourage and inspire our Mustangs every step of the way. Your support helps make these successes possible and strengthens the spirit of our community.

As the end of the school year quickly approaches, tonight gave us a chance to pause, reflect, and celebrate every member of this incredible community. Together, we continue to live out the words:

“Let us remember, we are in the holy presence of God.”

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Location

Category

Telephone

Address


3601 S Lowell Boulevard
Denver, CO
80236

Opening Hours

Monday 8am - 3:30pm
Tuesday 8am - 3:30pm
Wednesday 8am - 3:30pm
Thursday 8am - 3:30pm
Friday 8am - 3:30pm