Staff holiday
Employee Events
Category: Holidays. Event Type: In-person.
Thursday, July 3, 2025.
International New Student & Family Welcome Program
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Wednesday, August 27, 2025.
Transitions Program Student & Family Welcome Program
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Thursday, August 28, 2025.
Upper School New Student & Family Welcome Program
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Saturday, August 30, 2025.
Returning boarding students begin arriving to campus
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Monday, September 1, 2025.
Labor Day
Employee Events
Category: Holidays. Event Type: In-person.
Monday, September 1, 2025.
Staff holiday
Employee Events
Category: Faculty and Staff: LS. Faculty and Staff: MS. Faculty and Staff: US. Holidays. Event Type: In-person.
Monday, September 1, 2025.
K-5 Meet the Teachers & Classroom Visits
Lower School
Category: All Grades K–5. Annual Calendar: LS 2025-2026. Event Type: In-person.
Tuesday, September 2, 2025.
Kindergarten and New Grade 4 Family Orientation
Lower School
Category: All Grades K–5. Annual Calendar: US 2025-2026. Event Type: In-person.
Tuesday, September 2, 2025, 10:00 AM – 11:00 AM.
Middle School All Student Programming, 2pm dismissal, 2:15pm buses available
Middle School
Category: All Grades 6–8. Annual Calendar: MS 2025-2026. Event Type: In-person.
Wednesday, September 3, 2025.
Orange week
Middle School
Category: Academics. Event Type: In-person.
Wednesday, September 3, 2025.
Upper School All Student Programming
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Wednesday, September 3, 2025.
Bus service begins
Lower School
Category: Academics. Annual Calendar: LS 2025-2026. Annual Calendar: MS 2025-2026. Annual Calendar: US 2025-2026. Event Type: In-person.
Wednesday, September 3, 2025.
Lower School ASP begins
Lower School
Category: All Grades K–5. Annual Calendar: LS 2025-2026. Event Type: In-person.
Wednesday, September 3, 2025.
Lower School First full day of classes (2pm dismissal, 2:15pm buses available, ASP begins)
Lower School
Category: All Grades K–5. Annual Calendar: LS 2025-2026. Event Type: In-person.
Wednesday, September 3, 2025.
Middle School All Student Programming, 2pm dismissal, 2:15pm buses available
Middle School
Category: All Grades 6–8. Annual Calendar: MS 2025-2026. Event Type: In-person.
Thursday, September 4, 2025.
Orange week
Middle School
Category: Academics. Event Type: In-person.
Thursday, September 4, 2025.
Upper School Classes Begin
Upper School
Category: Annual Calendar: US 2025-2026. Event Type: In-person.
Thursday, September 4, 2025.
Lower School 2pm dismissal, 2:15pm buses available
Lower School
Category: All Grades K–5. Annual Calendar: LS 2025-2026. Event Type: In-person.
Thursday, September 4, 2025.
Middle School All Student Programming, 2pm dismissal, 2:15pm buses available
Middle School
Category: All Grades 6–8. Annual Calendar: MS 2025-2026. Event Type: In-person.
Friday, September 5, 2025.
Orange week
Middle School
Category: Academics. Event Type: In-person.
Friday, September 5, 2025.
Lower School 2pm dismissal, 2:15pm buses available
Lower School
Category: All Grades K–5. Annual Calendar: LS 2025-2026. Event Type: In-person.
Friday, September 5, 2025.
MS Afternoon Program & ASP begin
Middle School
Category: Annual Calendar: MS 2025-2026. Event Type: In-person.
Monday, September 8, 2025.
LS Curriculum Night
Lower School
Category: Annual Calendar: LS 2025-2026. Event Type: In-person.
Wednesday, September 17, 2025, 6:00 PM – 7:30 PM.
K-5 Classrooms & Thacher.
Saturday Course Session 1: Grades 5 - 8
Employee Events
Category: All Grades 6–8. All Grades K–5. Academics. Event Type: In-person.
Saturday, September 20, 2025.