This School is no longer MSHSAA Member School. Membership Membership Type: Full Member School Type: High School, Grades 9-12 Board District: #7 St. Louis County: St. Louis Contact Information Address: 13201 Clayton Rd St. Louis, MO 63131-1099 Phone: (314) 275-3580 Fax: (314) 275-3516 School Website: http://www.principiaschool.org/ Facebook: Principiaschoolathletics Twitter: Instagram: principiaschoolathletics School Details School Colors: Gold/Blue Boys Mascot: Panther Girls Mascot: Panther Boys Logo: Girls Logo: Location Principia High School 38.628429 -90.469406 #222 0 13201 Clayton Rd St. Louis, MO 63131-1099 (314) 275-3580 Get Directions