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Griessmith middle school, a pennsylvania public charter school, founded in 2006, offering grades k-12.
Griessmith middle school, a pennsylvania public charter school, founded in 2006, offering grades k-12.
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Griessmith middle school, a pennsylvania public charter school, founded in 2006, offering grades k-12.
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Latest News

  • Teacher Job Fair on March 26
  • Laura Plasschaert Receives Impact Award for 8th Grade Math Growth at Grissom
  • Penn hosts Robotics Tournament March 7-8
  • 2026 Instrument Selection Night
  • Ribbon Cutting for Penn High School’s Dr. Jerry and Donna Thacker Fieldhouse
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Principal’s Welcome

Jenn Sinclair

Welcome to Grissom Middle School, home of the Guardsmen! At Grissom, we uphold the values encapsulated in our acronym G.U.A.R.D.: Growing, United, Accountable, Respectful, and Dependable. These principles guide us in creating a supportive and enriching environment where every student can thrive.

Middle school marks a crucial period in our students’ lives, where they begin to shape their future paths. It is our mission at Grissom to provide a positive, challenging, and academically focused learning environment that prepares our students for the challenges ahead. Through rigorous academics, innovative programs, and a dedicated faculty, we strive to nurture intellectual curiosity and foster lifelong learning.

Each year, our staff and students embark on a journey of growth and discovery, both academically and personally. We believe in the potential of every student and are committed to supporting their development into responsible, compassionate, and engaged members of our community.

As Principal, I am proud to lead a school where character and academic excellence go hand in hand. Together with our passionate educators and supportive families, we are dedicated to equipping our students with the skills and knowledge they need to succeed in high school and beyond.

Thank you for being a part of the Grissom community. We invite you to explore our website to learn more about our programs, activities, and the many opportunities available to our students.

Warm regards,

Mrs. Sinclair

 

Click here to learn more about our school.

P-H-M Schools

  • Bittersweet Elementary School
  • Elm Road Elementary School
  • Elsie Rogers Elementary School
  • Horizon Elementary School
  • Madison Elementary School
  • Mary Frank Elementary School
  • Meadow's Edge Elementary School
  • Moran Elementary School
  • Northpoint Elementary School
  • Prairie Vista Elementary School
  • Walt Disney Elementary School
  • Discovery Middle School
  • Grissom Middle School
  • Schmucker Middle School
  • Penn High School
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