From infancy through grade 12, your child’s educational journey is guided by those who believe in boundless possibility. Beyond a college-prep day and boarding school in St. Louis, Principia is founded upon Christian Science principles that see students as limitless and divinely whole. Here, our students grow through character education and experiential learning to uncover natural strengths, critical thinking skills, and limitless potential.
Above all, our students learn what it means to live with Purpose. You’ll see the difference everywhere you look—from the creativity and future-ready learning in and out of the classroom, to the air of inclusivity and sportsmanship.
St. Louis, Missouri, sits along the Mississippi River at the state’s eastern border, near its meeting point with the Missouri River. Covering 61.74 square miles, its boundaries have been unchanged since 1876. Known as the "Gateway to the West," St. Louis was central to U.S. westward expansion, symbolized by the Gateway Arch—a 630-foot stainless steel structure and the world’s tallest monument—located in the 86-acre Gateway Arch National Park along the downtown riverfront. Operating independently from any county under Missouri's laws, St. Louis adopted its charter in 1923, following incorporation as a town in 1809 and as a city in 1823, a governance structure still in place today.
