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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.

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Congratulations Horizon High School for being recognized as a
2019 National Gold Council of Excellence

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

Follow us on Facebook and Twitter

Click here for information about the 2020 yearbook, including senior photo instructions and deadlines.

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 Hours7:00 am - 3:30 pm
School Hours
7:15 am - 3:00 pm
Early Release
7:10 am - 12:30 pm

Upcoming Events

Cap and Gown Pictures

Cap and Gown Pictures

Date & Time: Fri, 02/21/2020 (All day)

On the stage in the Student Center, Cap and Gown will be provided.

02/21/2020 (All day)
Feb 21

Spring Musical at 7:00pm

Spring Musical at 7:00pm

Date & Time:
Repeats every day until Sat Feb 29 2020.
Fri, 02/28/2020 - 7:00pm

02/28/2020 - 7:00pm
Feb 28

8th Grade Open Houe

8th Grade Open Houe

Date & Time: Mon, 03/02/2020 - 6:00pm to 8:00pm

03/02/2020 - 6:00pm
Mar 2

Upcoming Sports

Boys' Basketball vs Rocky Mountain

Boys' Basketball vs Rocky Mountain

Date & Time: Tue, 02/18/2020 - 6:30pm to 7:30pm

D & JV 5:00
C & Varsity 6:30

02/18/2020 - 6:30pm
Feb 18

Boys' D, C & JV vs Legacy

Boys' D, C & JV vs Legacy

Date & Time: Wed, 02/19/2020 - 4:00pm to 5:00pm

D 4:00
C 5:30
JV 7:00

02/19/2020 - 4:00pm
Feb 19

Wrestling - State

Wrestling - State

Date & Time: Thu, 02/20/2020 (All day) to Sat, 02/22/2020 (All day)
Location: Pepsi Center, 1000 Chopper Cir, Denver, CO 80204, USA

02/20/2020 (All day)
Feb 20