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School Calendar 2026-27

(updated 01/28/2026)
Note: Students cannot depart early for break without special permission of their associate dean. 

FALL Semester                        Aug. 27 – Dec. 17

Aug. 5

Wed.

Student schedules released

Aug. 5–11

Wed.–Tues.

Schedule course change request period

Aug. 14–18     

Fri.–Tues.

New Faculty Orientation

Aug. 19–21

Wed.–Fri.

Faculty Meetings

Aug. 21

Fri.

Student Leader arrival (9–11 am) and orientation

Aug. 23

Sun.

New international students arrival (1–2:30 pm) and orientation

Aug. 24

Mon.

New students and Class of 2029 (returning and new) arrival and orientation.
Boarding students arrive (10 am–noon). Day students arrive at 11:45 am.

Aug. 26

Wed.

Returning students from the Classes of 2027 and 2028 arrive (9–11 am).
Day students arrive at 11:30 am.

Aug. 27

Thurs.

Fall semester classes begin

Aug. 28–30

Fri.–Sun.

Community weekend*

Sept. 2

Wed.

Convocation

Sept. 4–6

Fri.–Sun.

Community weekend*

Oct. 4

Sun.

College fair, 3–5 pm

Oct. 7

Wed. 

Testing day (PSAT)

Oct. 15

Thurs.

Fall midterm

Oct. 15–17

Thurs. eve–Sat.  

Fall Family Days

Oct. 17–20

Sat.–Tues.

Fall long weekend

Oct. 21

Wed.

Faculty planning day; no classes

Oct. 22

Thurs.

Classes resume

Nov. 20

Fri.

November break begins at 3:35 pm

Nov. 21

Sat.

Charter buses depart at 9 am; dorms and campus close at noon.

Nov. 21–29

Sat.–Sun.

November break 

Nov. 29

Sun.

Students return to campus, 2–7:30 pm

Nov. 30

Mon.

Classes resume

Dec. 4–6

Fri.–Sun.

Community weekend*

Dec. 6

Sun.

Vespers (on campus)

Dec. 11–13

Fri.–Sun.

Community weekend*

Dec. 14–17

Mon.–Thurs.

Final assessment week

Dec. 17

Thurs.

End of fall semester; winter break begins at 3:45 pm.
Vespers (off campus, Boston)

Dec. 18

Fri.

Charter buses depart at 9 am; dorms and campus close at noon.

 

 

SPRING Semester                   Jan. 6 – May 20

Jan. 3

Sun.

Student Leaders return to campus. Potential return for varsity athletes, district musicians
depending on scheduled competitions. 

Jan. 4–5

Mon.–Tues.        

Faculty professional development days

Jan. 4

Mon.

International students return to campus, 2-7:30 pm

Jan. 5

Tues.

All other boarding students return to campus, 2–7:30 pm

Jan. 6

Wed.

Spring semester classes begin

Jan. 8–10

Fri.–Sun.

Community weekend*

Feb. 3

Wed.

Founder’s Day

Feb. 6–9

Sat.–Tues.

Winter long weekend

Feb. 10

Tues.

Classes resume

Feb. 26–28      

Fri.–Sun.

Community weekend*

March 4

Thurs.

Spring midterm

March 5 

Fri.

Family Class Visit Day. Spring break begins after students’ final commitments.

March 6

Sat.

Charter buses depart at 9 am; dorms and campus close at noon. 

March 6–21

Sat.–Sun.

Spring break

March 22

Mon.

Faculty professional development day
Students return to campus, 2–7:30 pm

March 23

Tues. 

Spring semester classes resume

March 26–28

Fri.–Sun.

Community weekend*

April 7 

Wed.

Testing day (SAT)

April 17–20

Sat.–Tues.

Spring long weekend

April 21

Wed.

Classes resume

May 2

Sun.

132nd Concert of Sacred Music

May 14–16

Fri.–Sun.

Community weekend*

May 17–20

Mon.–Thurs.

Final assessment week

May 20

Thurs.

End of spring semester; 9th- to 11th- grade students depart by noon.

May 21

Fri.

Charter buses to JFK and Logan airports ONLY depart at 9 am; 9th- to 11th- grade students depart by noon.

May 21–23

Fri.–Sun.

Class of 2027 Commencement Weekend

May 23

Sun.

144th Commencement, 11 am

 

*Community weekends: To further community-building opportunities and in advance of longer breaks and academic assessments, certain weekends during the school year are “closed” to off-campus travel.