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Now Enrolling for 25/26!

Join Longmont's premier K-8 tuition-free, public charter school! We also offer full- and part-time preschool for 3- to 5-year-olds.

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Flagstaff Academy Home

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Where Science and Imagination Take Flight!

Flagstaff Academy is Longmont's largest public charter school. Our school offers a tuition-free Core Knowledge-based curriculum for grades kindergarten through 8th. We also offer a fee-based full- and part-time preschool program on-site. Preschool students receive priority entrance into Flagstaff elementary school. 
 
Flagstaff Academy middle school is recognized as a Colorado Trailblazer Schools to Watch by The Colorado Association of Middle Level Education. Flagstaff is the only charter school in the state to hold the Schools
to Watch designation, having also received the designation in 2019. 
 
Known for a strong science and technology focus–as well as a core-knowledge curriculum–Flagstaff graduates continue to be recognized on the local, state, and national levels in science, technology, athletics, and the arts. 
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Flagstaff Academy School to Watch banner

Our Mission

The mission at Flagstaff Academy is to develop students who are equipped to be well-rounded, ethical leaders in the world community with a foundation based on science and technology.
 
Flagstaff Academy's Guiding Principles:
  • Provide a preschool through eighth grade Core Knowledge-based education with a hands-on science and technology focus, as well as attention to the arts
  • Foster an environment that challenges students to achieve their academic potential
  • Promote, value, and recognize academic achievement and creativity
  • Respect the individual, classroom, school, community, and world


Academic and School Achievements


Flagstaff Academy is recognized as a leader in rigorous, caring education across the State of Colorado. Our achievements speak for themselves: 
 
  • 2022 & 2019 Colorado Trailblazer School to Watch (only charter school in Colorado!)
  • Highly Effective Schools Through Libraries designee (1 of only 17 schools in the state since 2016 to receive this recognition)
  • Two-time National Association of Special Education Teachers Exceptional Charter School
    Three-time John Irwin School of Excellence Winner (Colorado Department of Education Top 8% of Schools Achievement) Winner
  • Multi-year Corden Pharma Regional STEM Fair Winners
    Middle School State Robotics Champions
  • Award Winners
    Top Ten in Colorado in English Language Proficiency Assessment (2014 and 2016)
  • #1 in Colorado in English Language Proficiency Assessment (2015)
  • High School Readiness: A majority of our alumni take Honors, Advanced Placement, and International Baccalaureate courses, assume leadership roles in high school, and move on to four-year colleges, as well as vocational schools, and military service
  • Flagstaff Academy is a Colorado Health Links Certified Healthy Workplace, the only charter school in Colorado to receive this designation
Read the Flagstaff Academy Mission

Upcoming Events

Flagstaff Academy End of Year Picnic & BOGO Book Fair

Time: 5 PM – 7 PM
Location: Outdoors-O-North Elementary Field (250), Outdoors-O-Elementary Playground Shelter (30), Gym-Gym-Gym East (50), (Parking Lot)-Parking Lot-P-Parking Lot West (10), Gym-Gym-Gym West (50), Parking Lot-P-Parking Lot South (10)
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About Our School

  • 2005 Year Founded
  • 800 Enrollment
  • 23 Average Class Size
  • 15 Extracurriculars Offered
Pencils and books

Our Guiding Principles

  • Provide a preschool through eighth grade Core Knowledge-based education with a hands-on science 
    and technology focus, as well as attention to the arts.
  • Foster an environment that challenges students to achieve their academic potential.
  • Promote, value, and recognize academic achievement and creativity
  • Respect the individual, classroom, school, community, and world.
Show More Guiding Principles

Recent News

Now Enrolling for 25/26! Featured Photo

Now Enrolling for 25/26!

Join Longmont's premier K-8 tuition-free, public charter school! We also offer full- and part-time preschool for 3- to 5-year-olds.
Flagstaff Academy Students Shine at Statewide Microplastics Summit Featured Photo

Flagstaff Academy Students Shine at Statewide Microplastics Summit

Flagstaff Academy Charter School’s Green Team students presented at the 2025 Colorado Microplastics Summit, hosted by the Ocean First Institute in Denver. Sixteen student members, along with four staff advisors, attended the summit to present original research on the presence and impact of microplastics in local ecosystems.
Flagstaff Academy Dragon Bots Robotics Team Shines in VEX IQ Competitions Featured Photo

Flagstaff Academy Dragon Bots Robotics Team Shines in VEX IQ Competitions

The Flagstaff Academy Charter School girls’ 4th-grade robotics team, known as the Dragon Bots, is making waves across the country with their impressive performance in VEX IQ Competitive Robotics tournaments. This group of four talented 4th-grade girls—Samantha Talluri, Markayla Hyde, Aaradhya Thakar, and Avery Lam—has been setting personal records and collecting numerous awards along the way.
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