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Academic Calendar

HomeAcademic Calendar
September 2026
SMTWTFS
30
31
1
2
3
4
5
First day of school
6
7
8
9
10
11
12
Labor Day – no school
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Yom Kippur – no school
27
28
29
30
1
2
3
October 2026
SMTWTFS
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Columbus Day / Indigenous Peoples Day – no school
18
19
20
21
22
23
24
25
26
27
28
29
30
31
November 2026
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Veterans Day – no school
15
16
17
18
19
20
21
22
23
24
25
26
27
28
No after-care programThanksgiving – no school
29
30
1
2
3
4
5
December 2026
SMTWTFS
29
30
1
2
3
4
5
6
7
8
9
10
11
12
Winter concerts
Winter concerts
13
14
15
16
17
18
19
No after-care program
No after-care program
20
21
22
23
24
25
26
Winter break
Winter break
27
28
29
30
31
1
2
Winter break
Winter break
January 2027
SMTWTFS
27
28
29
30
31
1
2
Winter break
Winter break
3
4
5
6
7
8
9
First day of school after winter break
First day of school after winter break
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Martin Luther King Jr. Day – no school
Martin Luther King Jr. Day – no school
24
25
26
27
28
29
30
31
1
2
3
4
5
6
February 2027
SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
No after-care program
No after-care program
14
15
16
17
18
19
20
February break
February break
21
22
23
24
25
26
27
28
1
2
3
4
5
6
March 2027
SMTWTFS
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Good Friday – no school
28
29
30
31
1
2
3
April 2027
SMTWTFS
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
No after-care program
No after-care program
18
19
20
21
22
23
24
Spring break
Spring break
25
26
27
28
29
30
1
May 2027
SMTWTFS
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Spring concerts
Spring concerts
23
24
25
26
27
28
29
30
31
1
2
3
4
5
Memorial Day – no school
Memorial Day – no school
June 2027
SMTWTFS
30
31
1
2
3
4
5
Memorial Day – no school
Memorial Day – no school
6
7
8
9
10
11
12
Last day of school – no after-care program
13
14
15
16
17
18
19
Juneteenth – no school
Juneteenth – no school
20
21
22
23
24
25
26
27
28
29
30
1
2
3
July 2027
SMTWTFS
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
August 2027
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
First day of the 2027-2028 school year
First day of the 2027-2028 school year

Key Dates

Faculty orientation and professional development
Watertown Kindergarten orientation, 9:00 a.m.
Wellesley Kindergarten orientation, 9:00 a.m.
First day of school
Labor Day – no school
Yom Kippur – no school
Columbus Day / Indigenous Peoples Day – no school
Veterans Day – no school
No after-care program
Thanksgiving – no school
Winter concerts
Winter concerts
No after-care program
No after-care program
Winter break
Winter break
First day of school after winter break
First day of school after winter break
Martin Luther King Jr. Day – no school
Martin Luther King Jr. Day – no school
No after-care program
No after-care program
February break
February break
Good Friday – no school
No after-care program
No after-care program
Spring break
Spring break
Spring concerts
Spring concerts
Memorial Day – no school
Memorial Day – no school
Last day of school – no after-care program
Juneteenth – no school
Juneteenth – no school
First day of the 2027-2028 school year
First day of the 2027-2028 school year
September 2025
SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
October 2025
SMTWTFS
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
November 2025
SMTWTFS
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
December 2025
SMTWTFS
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
January 2026
SMTWTFS
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
February 2026
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
March 2026
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
April 2026
SMTWTFS
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
May 2026
SMTWTFS
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
June 2026
SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
July 2026
SMTWTFS
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
August 2026
SMTWTFS
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5

Key Dates

September 2024
SMTWTFS
1
2
3
4
5
6
7
Labor Day – No SchoolFirst Day All School Students
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
October 2024
SMTWTFS
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Indigenous Peoples Day – No School
20
21
22
23
24
25
26
SAT School Day Fall 2024
27
28
29
30
31
1
2
November 2024
SMTWTFS
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Veterans Day – No School
17
18
19
20
21
22
23
24
25
26
27
28
29
30
No After School ProgramThanksgiving – No School
December 2024
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
No After School Program
22
23
24
25
26
27
28
Winter Recess – No School
29
30
31
1
2
3
4
Winter Recess – No School
January 2025
SMTWTFS
29
30
31
1
2
3
4
Winter Recess – No School
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Martin Luther King, Jr. Day – No School
26
27
28
29
30
31
1
February 2025
SMTWTFS
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
No After School Program
16
17
18
19
20
21
22
February Break – No School
23
24
25
26
27
28
1
March 2025
SMTWTFS
23
24
25
26
27
28
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
April 2025
SMTWTFS
30
31
1
2
3
4
5
6
7
8
9
10
11
12
SAT School Day Spring 2025
13
14
15
16
17
18
19
No After School ProgramGood Friday – No-School
20
21
22
23
24
25
26
Spring Recess – No School
27
28
29
30
1
2
3
May 2025
SMTWTFS
27
28
29
30
1
2
3
4
5
6
7
8
9
10
AP Microeconomics ExamAP Statistics ExamAP Macroeconomics Exam
AP World History: Modern Exam
11
12
13
14
15
16
17
AP Calculus AB ExamAP Environmental Science ExamAP English Language and Composition ExamAP Physics 1 Exam
AP Calculus BC Exam
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Memorial Day – No School
June 2025
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Last Day of School
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
July 2025
SMTWTFS
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
August 2025
SMTWTFS
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6

Key Dates

Labor Day – No School
First Day All School Students
Indigenous Peoples Day – No School
SAT School Day Fall 2024
Veterans Day – No School
No After School Program
Thanksgiving – No School
No After School Program
Winter Recess – No School
Martin Luther King, Jr. Day – No School
No After School Program
February Break – No School
SAT School Day Spring 2025
No After School Program
Good Friday – No-School
Spring Recess – No School
AP Microeconomics Exam
AP Statistics Exam
AP World History: Modern Exam
AP Macroeconomics Exam
AP Calculus AB Exam
AP Calculus BC Exam
AP Environmental Science Exam
AP English Language and Composition Exam
AP Physics 1 Exam
Memorial Day – No School
Last Day of School
September 2023
SMTWTFS
27
28
29
30
31
1
2
3
4
5
6
7
8
9
Labor Day – No SchoolFirst Day All School Students
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Yom Kippur – No School
October 2023
SMTWTFS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Indigenous Peoples Day – No School
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
November 2023
SMTWTFS
29
30
31
1
2
3
4
5
6
7
8
9
10
11
Veterans Day – No School
12
13
14
15
16
17
18
19
20
21
22
23
24
25
No After School Program Thanksgiving – No School
26
27
28
29
30
1
2
December 2023
SMTWTFS
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
No After School Program Winter Recess – No School
24
25
26
27
28
29
30
Winter Recess – No School
31
1
2
3
4
5
6
Winter Recess – No School
January 2024
SMTWTFS
31
1
2
3
4
5
6
Winter Recess – No School
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Martin Luther King, Jr. Day – No SchoolNo After School Program
21
22
23
24
25
26
27
28
29
30
31
1
2
3
February 2024
SMTWTFS
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
February Break – No School
25
26
27
28
29
1
2
March 2024
SMTWTFS
25
26
27
28
29
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Good Friday – No School
31
1
2
3
4
5
6
April 2024
SMTWTFS
31
1
2
3
4
5
6
7
8
9
10
11
12
13
No After School Program
14
15
16
17
18
19
20
Spring Recess – No School
21
22
23
24
25
26
27
28
29
30
1
2
3
4
May 2024
SMTWTFS
28
29
30
1
2
3
4
5
6
7
8
9
10
11
AP United States History Exam
12
13
14
15
16
17
18
AP Precalculus ExamAP English Language and Composition Exam
19
20
21
22
23
24
25
26
27
28
29
30
31
1
Memorial Day – No School
June 2024
SMTWTFS
26
27
28
29
30
31
1
Memorial Day – No School
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Last Day of School
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
July 2024
SMTWTFS
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
August 2024
SMTWTFS
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

Key Dates

Labor Day – No School
First Day All School Students
Yom Kippur – No School
Indigenous Peoples Day – No School
Veterans Day – No School
No After School Program 
Thanksgiving – No School
No After School Program 
Winter Recess – No School
Martin Luther King, Jr. Day – No School
No After School Program
February Break – No School
Good Friday – No School
No After School Program
Spring Recess – No School
AP United States History Exam
AP Precalculus Exam
AP English Language and Composition Exam
Memorial Day – No School
Last Day of School

Important Notes

Graduation for Grades 5, 8, and 12 - date to be confirmed.
The School follows the Watertown and Wellesley public school schedules for snow emergencies, cancellations, and delays. If either town closes or delays, the same applies to both campuses.
Parent-teacher conferences are held in November and March. Dates are communicated in advance.
Grade reports are issued at the end of each quarter and semester. Grades and communications remain available through the School Portal.
After-care runs until 5:45 p.m. on school days, except on dates marked as having no after-care program.

Last Day Calculator

Contingency days are days lost to weather or another emergency closure and are made up at the end of the year.

0 contingency days
Students: Friday, June 11
Faculty: Thursday, June 17
1 contingency day
Students: Monday, June 14
Faculty: Monday, June 21
2 contingency days
Students: Tuesday, June 15
Faculty: Tuesday, June 22
3 contingency days
Students: Wednesday, June 16
Faculty: Wednesday, June 23
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