The Principia
| Motto | As The Sowing, The Reaping |
|---|---|
| Type | Private school, private college |
| Established | 1898 |
| Undergraduates | 480 |
| Location | , |
| Campus | 2 campuses |
| Colors | Blue & gold |
| Website | The Principia |
The Principia is an educational institution historically affiliated with Christian Science. It is located on two campuses in the St. Louis, Missouri metropolitan area of the United States. Principia School, located in Town and Country, West St. Louis County, serves students from early childhood through high school, and Principia College, located about thirty miles away, is on the bluffs overlooking the Mississippi River in Elsah, Illinois.