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boy in library with book
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We Are Flagstaff Academy

Award-winning programs from preschool through 8th grade. Tuition-free for grades K-8 and open to all. A safe, welcoming place to learn. That's why families in your community choose us for their child's education.
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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

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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.
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Recent News

School staff in the shape of a 20

Flagstaff Academy Charter School Celebrates 20 Years of Excellence

Flagstaff Academy Charter School opened its doors on its 20th year of operation, marking two decades of academic innovation, community engagement, and student-centered learning. Since its founding in 2005, Flagstaff Academy has grown from a small, hopeful charter to Longmont’s premier tuition-free public charter school, now serving nearly 800 students and employing close to 100 dedicated teachers and staff.
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Flagstaff Academy Receives Top-Tier Colorado Shines Rating for Early Childhood Program

The Flagstaff Academy Charter School preschool program has received a Level 5 quality rating from Colorado Shines, the state’s quality rating and improvement system for early care and learning programs. A Level 5 is the highest possible rating, underscoring Flagstaff Academy’s ongoing commitment to excellence in early childhood education.
Schools to Watch Awards presentation

Flagstaff Academy Recognized as 2025 Colorado Trailblazer “School to Watch”

Flagstaff Academy Charter School has once again earned statewide and national acclaim, having been named one of the 2025 Colorado Trailblazer Schools to Watch by the Colorado Association of Middle Level Education (CAMLE). The school is one of only five in Colorado to receive this designation and was honored at the National Schools to Watch Conference held over the summer in Washington, D.C.
Student speaks with attendee at Microplastics Summit

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.
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