Skip To Main Content

Parent Portal

Welcome to the School Portal, a digital resource for current families! Below, you'll find public information such as the all-School calendar of events, key phone numbers and dates, athletic information, and more.

The secure portal is for parents, students, and staff.

Log in

Phone Numbers

  • Principia Hotline
    314.514.3000
  • Sports Hotline
    314.275.3580
  • Switchboard
    314.434.2100
  • Boys' Dorm
    314.275.3541
  • Girls' Dorm
    314.275.3544
  • Afterschool Care
    314.275.3579
  • Campus House
    314.275.3590
  • Campus Security
    314.514.3111

Principia School Key Dates for 2021-2022

Fall Semester 2021  
Pre-season Training begins Monday, Aug. 9, 2021
All-Parent Opening Meeting/PPA Ice Cream Social Sat., Aug. 14
Upper School/Middle School First Day Monday, Aug. 16
Lower School First Day Tuesday, Aug. 17
Family Weekend Oct. 8-10
Fall Break (no school) Oct. 15-18
Thanksgiving Break (no school) November 24-26
US/MS/LS/PS Last day of classes Thursday, Dec. 9
   
Spring Semester 2022  
First Day of Classes Tuesday, Jan. 4
MLK Holiday Monday, Jan. 17
Spring Break March 12-27
Classes resume Monday, March 28
Last Day of Classes for LS/MS Thursday, May 19
Last Day for US Friday, May 20
Graduation Sunday, May 22
US Sports Camps (optional) May 23-27

All-School