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GSA is Now Enrolling for Fall 2025

Now Enrolling for Fall 2025

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Gateway Science Academy of St. Louis - High Home

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Gateway Science Academy of St. Louis - High is a non-selective and tuition-free public charter school located in St. Louis. GSA - High serves grades 9-12. Our STEM-focused and college-preparatory curriculum is designed to change the trajectory of students’ lives.

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Recent News

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GSA AMI DAY

Due to winter weather advisory , all GSA campuses will hold a virtual learning day today, Wednesday, February 19th.
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  • Authorized by Missouri Charter Public School Commission
  • Managed by Concept Schools
  • Accredited by Network Accreditation by Cognia
  • Certified by STEM Certified by Cognia
  • Named as US News - Best High School
GSA Fyler students playing instruments

Welcome

Welcome to our school! We believe that parent participation is key to student success; our new website is designed to provide parents with all the information they need to be active participants in their student’s education. You will find that the site works just as well on mobile devices as it does on a desktop so you can find information on the go.
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About Us

The Mission of our school is to provide a safe and enriching learning environment where the whole student is nurtured and developed. Our teachers and administrators pledge to support the academic and emotional wellbeing of each and every student. Students will leave our school prepared with skills and knowledge that will give them advantages throughout their future educational and life experiences.
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At A Glance

  • 2012 Founded
  • 9-12 Grades Served
  • 400 Target Enrollment
  • 1:1 Technology
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