Annual Calendar of Events

2022 – 2023 Calendar of Events

September 2Boarding students check-in and move into dorms
September 5Labor Day – offices closed
September 6Registration day and welcome BBQ, 3-6 p.m.
September 7First day of classes
October 12PSAT
October 17-21Quarter Examinations
November 23Thanksgiving Break – half day
November 24-25Thanksgiving Break – no classes
December 12-16Semester Review and Examinations
December 16WINTER VACATION begins after exams end, 3:30 p.m.
January 8, 2023Boarding students return – by 8:00 p.m.
January 9Second semester classes begin (Monday)
February 20Presidents’ Day – no classes
March 13-17Quarter Examinations
March 30ArtsFest, 3-7 p.m.
March 31SPRING VACATION begins after classes, 3:30 p.m.
April 10Boarding students return – by 8:00 p.m.
April 11Classes resume (Tuesday)
April 14Anniversary Antics – celebrating Southwestern’s 99th birthday
May 1-12AP Exams
May 19Annual Track, Field and Carnival, 12-4 p.m.
May 29Memorial Day - no classes
May 30Semester Review begins
June 2, 5-7Semester Examinations
July 4Independence Day – offices closed
August 22The 2023-2024 school year begins



Space can be difficult to find on airplanes at busy holiday times. We urge you to make reservations well in advance of school vacations to help make sure a student does not lose class time or graduation credits. Students leaving early or returning late receive lower grades and loss of credits.

International students may stay on campus for all or part of any holiday by prior arrangement with the Student Office. There are activities, meal service, and supervision every day of the year.

OPENING OF 2022 – 2023 YEAR

Boarding students arrive at the San Marino campus and move into dormitories on Friday, September 2, 2022 (not before) during the day.

Registration day for all boarding and day students is on Tuesday, September 6, 2022, 3 p.m. to 6 p.m.


Students may leave after exams end on Friday, December 16, after 3:30 p.m. (or on Saturday, December 17). Resident students should return to their dorms on Sunday, January 8, 2023, by 8:00 p.m. Classes resume on Monday, January 9, 2023.


Students may leave after exams end on Friday, March 31, after 3:30 p.m. (or on Saturday, April 1). Resident students should return to their dorms on Monday, April 10, by 8:00 p.m. Classes resume on Tuesday, April 11, 2023.


Students may leave after graduation programs end Thursday afternoon, June 8, 2022.

Call or write your plans in advance:

MAIL: 2800 Monterey Road, San Marino, California 91108

PHONE: San Marino 1-626-799-5010 – Option 5