J K Mullen High School

read moreMullen 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. Mullen belongs to one of the largest educational networks in the world. Lasallian schools educate more than 850,000 students in 80 different countries. Mullen High School is named for John Kernan Mullen, famed businessman and philanthropist and founder of the Colorado Milling and Elevator Company.

read moreOur community comes from 87 different zip codes, all with different passions, gifts, personalities, and backgrounds. In their diversity, our students have some things in common: they love each other, and they love their school. Get to know some of our community members and hear from them directly about their experience at Mullen High School. I truly believe that my daughter grew the way she did because she was planted in the right place. It was not a guarantee that I would go to Mullen four years ago due to financial constraints.

read moreMullen invites 8th grade students and prospective transfers to become a "Mustang for a Day." Mustang for a day will start in the fall of 2020, assuming normal school operations are in effect. Our unique shadowing experience allows potential Mustangs the opportunity to see what a typical day is like for a Mullen student. We offer tours of our campus during your student's shadowing day, either after dropoff or before pickup. You may also request a campus tour by appointment. More information about financial aid can be found here.