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Welcome to Horizon High School

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Horizon High School is committed to excellence on all fronts — academic achievement, arts, athletics and co-curricular activities. Horizon balances a holistic liberal arts education with rigorous content-specific curriculum to equip students for success beyond graduation.

Teachers and staff get to know students as individuals, guiding them through the wide variety of academic experiences at Horizon. Academically, students are challenged to think critically and problem solve. During their high school years, Horizon students develop a strong work ethic that empowers them to take responsibility for their choices, decisions and future.

In a safe, caring community, Horizon fosters global thinking and transformative experiences that shape students for success in the 21st-century world.

The Five Star Education Foundation works closely with the Adams 12 Five Star Schools by forging partnerships and raising money to invest in student success. In collaboration with the district and business community, we fund opportunities that inclusively prepare students for a variety of options after high school, ranging from learning-readiness, to post-secondary education, to students directly entering the workforce. We have halted all overhead fundraising to address the immediate needs of our students and our community as we face COVID-19 together.​

Five Star Education Foundation

FutureForward Bus Schedules

Bollman Bus Schedule   Washington Square Bus Schedule

Click here for information on the 2021 yearbook, including details about senior photos & baby ads!

Horizon High School was recently named a 2020 Best High School, based on rankings that U.S. News & World Report published. This is quite the accomplishment since this report also includes private and charter institutions! We couldn’t be more proud of our school and our community! Checkout this link on the U.S. News profile page, with its new National, metro-area, and school-district rankings for HHS. #FiveStarProud #HawkPride

Student Government earns the National Gold Council of Excellence award for another year! #HawkPride #FiveStarProud

Unique Programs

The SOAR program is a four year, comprehensive program which provides an accelerated, rigorous course load across three majors: Humanities, Fine and Performing Arts, and Math/Science.
The Big Idea Project provides students quality experiential education opportunities to schools to build student leadership, wellbeing, workforce readiness and applied skills. Check back on our Big Idea Project Webpage for Big Idea opportunities! 

Social Media

Adams 12 Five Star Schools is one of 547 school districts in the United States and Canada to earn a place on the 5th Annual AP District Honor Roll for increasing access to AP course work while simultaneously maintaining or increasing the percentage of students earning scores of 3 or higher on AP Exams.


Address5321 E. 136th Avenue
Thornton , CO
Office Phone720-972-4400
Fax Number720-972-4599
Office Hours7:15 am - 4:15 pm
School Hours
7:45 am - 3:30 pm
Early Release
7:45 am - 1:00 pm

Upcoming Events

HHS Prom Tickets for 6-8pm or 8-10pm

HHS Prom Tickets for 6-8pm or 8-10pm

Date & Time: Sat, 04/24/2021 - 6:00pm to 10:00pm
Location: Horizon High School

04/24/2021 - 6:00pm
Apr 24

SAT Make-up Day

SAT Make-up Day

Date & Time: Tue, 04/27/2021 (All day)

04/27/2021 (All day)
Apr 27

Make-up PSAT Date

Make-up PSAT Date

Date & Time: Wed, 04/28/2021 (All day)

04/28/2021 (All day)
Apr 28

Spring Awards Ceremony

Spring Awards Ceremony

Date & Time: Wed, 04/28/2021 - 2:00pm to 4:00pm

04/28/2021 - 2:00pm
Apr 28