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At a Glance


Campus and Facilities


acres of woods, ponds, gardens, and trails used for outdoor learning



innovative, STEM-focused SMART® Labs supporting Preschool-twelfth grade

  • 7,477 square feet of science-lab space in the Upper School
  • 4 permaculture gardens and 1 greenhouse 
  • 12,000 square feet Performing Arts Center for band, choir, dance, and theater 
  • 2 IDEA Centers with more than 33,018 books
  • 4 performing arts stages 
  • 2 art studios
  • 3 dance studios
  • 15 instrumental and vocal practice rooms

Students and Faculty


U.S. states and 22 foreign countries represented in the student body


of faculty hold advanced degrees

  • 401 students
  • 200 hours per teacher devoted to in-house professional development each year
  • 25% ​of the student population are students of color 
  • 53% of Principia students receive financial aid 
  • 24% of students board at Principia 
  • 20% of boarding students are international



AP and/or college-credit courses offered in Upper School


student-teacher ratio


STEM projects completed in a semester per student

  • 94% of students attend college/university
  • 3 Learning Engagement Centers
  • Average number of trips Principia students participate in during their education
    • 5 for all Upper School students with up to 7 additional trips

    • 3 Middle School, additional local field trips

    • 1 Lower School national trip, dozens of local field trips



performing-arts opportunities for students each year 


of students receive instruments and supplies from Principia 

  • 7 days Middle School students take to pull together “Theater Week” performance each year
  • 6 band ensembles
  • 3 choruses
  • 40th year participating in the ABC Music Festival 
  • 2 dance concerts a year with student-choreographed pieces



championships including dozens of state titles



  • 32 interscholastic sports teams (16 Upper School and 16 Middle School)
  • 20+ sports offered
  • 12 tennis courts
  • 8 athletic fields (football, soccer, baseball, field hockey, lacrosse, rugby, softball, and cricket) 
  • 2022 year the new Simon Field House will be completed

Community and Student Leadership

School Houses

4 Upper School Houses
3 Middle School Houses
4 Lower School Houses

House Leadership Positions

32 Upper School leadership positions
6 Middle School leadership positions
14 Lower School leadership positions

Service Hours

100% of students participate in community service projects. Upper School students performed 4,400 hours of service from 2020-2021. More than $30,000 raised annually through donations for service/learning projects in South Africa and the Dominican Republic.

  • 30 Upper School House-sponsored activities
  • 1,835 of the 4,400 service hours during the 2020-2021 academic year were completed for senior projects

100% of Students

In Upper School, Middle School, and Lower School, all students receive a School-issued MacBook or iPad

Complete a senior capstone

In Upper School and Middle School, students travel domestically and/or internationally with Principia 

Participate in community-service activities

100% of Students:

  • Study the United Nations Sustainable Development Goals through independent projects in our annual Impact Challenge
  • Upper School seniors deliver a speech to the community 
  • Upper School students create multimedia presentations for classes
  • Middle School students engage in cross-curricular projects
  • Eighth graders give an end-of-year speech to the community


Plane planet

6,671 Upper School alumni live in 41 countries around the world