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Gateway Science Academy of St. Louis High School Home

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Now Enrolling for Grades 9-12

Give your child the advantage of a safe, supportive, STEM-focused education that prepares them for college and beyond.

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A Place Where Every Student Belongs

We’re proud to create a community where students are seen, supported, and challenged.

Meet Our Community

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A Strong Start Leads to a Strong Future

From PreK to 5th grade, our students gain the skills and confidence to succeed in school, career, and life.

Why Choose HSA?

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  • Authorized by Pillsbury United Communities logo
  • Managed by Concept Schools
  • Accredited by Network Accreditation by Cognia
  • Certified by STEM Certified by Cognia
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Welcome to Gateway Science Academy of St. Louis High

We believe every child deserves a high-quality education that unlocks their potential. At Gateway Science Academy of St. Louis High, we offer a safe, caring, and academically rigorous environment where students of all backgrounds thrive. Discover why so many families choose Gateway Science Academy of St. Louis High.
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A School with Purpose

Since 2023, Gateway Science Academy of St. Louis High has helped students in grades PreK–5 grow into confident, capable learners. Our focus on science, technology, engineering, and math is woven into everything we do—from hands-on projects to real-world problem-solving.
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At A Glance

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