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Dalton Seal
Seal in Royal Blue
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Academic Calendar
Holidays, Closures, & Key Dates
List of 11 items.
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August 2025
- August 13: Pre-Season Athletics (Football)
- August 14: Pre-Season Athletics (Varsity B/G Soccer and Volleyball)
- August 17-19: Peer Leadership Retreat
- August 18: New Faculty/Staff Orientation
- August 18: Pre-Season Athletics (JV B/G Soccer and Volleyball)
- August 25: Pre-Season Athletics (Tennis, Cross Country)
- August 25: Opening Faculty/Staff Meetings
- August 25: 9th Grade Newly Admitted Student Orientation (6:00 PM)
- August 26: 9th Grade Orientation & Clubs Fair (12:30-4:30 PM)
- August 27-29: 9th Grade Retreat at Brant Lake Camp
- August 28: Middle School New Student Orientation
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September 2025
- Monday, September 1: Labor Day—School Closed
- Thursday, September 4: Classes Start
- Saturday, September 20: Homecoming
- Tuesday, September 23: Rosh Hashanah—School Closed
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October 2025
- Thursday, October 2: Yom Kippur—School Closed
- Monday, October 13: Columbus/Indigenous People’s Day—School Closed
- Tuesday, October 14: Professional Development Day—School Closed for students
- Monday, October 20: Diwali—School Closed
- Friday, October 31: MS/HS Report Writing (no MS/HS classes)
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November 2025
- Thursday, November 13: FP Fall Conferences (FP early dismissal)
- Friday, November 14: FP/MS/HS Fall Conferences (no classes)
- Wednesday, November 26 – Friday, November 28: Thanksgiving Break—School Closed
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December 2025
- Monday, December 1: Classes Resume
- Friday, December 19: Candlelighting & Noon Dismissal
- Monday, December 22 – Friday, January 2: Winter Break
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January 2026
- Monday, January 5: Classes Resume
- Monday, January 19: MLK Jr. Day—School Closed
- Tuesday, January 20: Professional Day—School Closed for Students
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February 2026
- Friday, February 6: FP Report Writing Day (no FP classes)
- Monday, February 16: President’s Day—School Closed
- Tuesday, February 17: Lunar New Year—School Closed (Ramadan starts)
- Monday, February 23: MS/HS Report Writing Day (no MS/HS classes)
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March 2026
- Thursday, March 5: FP Winter Conferences (FP early dismissal)
- Friday, March 6: FP Winter Conferences (no FP classes)
- Wednesday, March 11: HS Report Conferences (no HS classes)
- Friday, March 13: MS Report Conferences (no MS classes)
- Friday, March 20: Eid al-Fitr—School Closed
- Monday, March 23 – Friday, April 3: Spring Break
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April 2026
- Thursday, April 2: Passover—School Closed for Spring Break
- Friday, April 3: Good Friday—School Closed for Spring Break
- Sunday, April 5: Easter
- Monday, April 6: Classes Resume
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May 2026
- Wednesday, May 6: 8th Grade Registration Conference
- Friday, May 15: FP Report Writing Day (no FP classes)
- Monday, May 25: Memorial Day—School Closed
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June 2026
- Wednesday, June 10: Arch Day—Last Day of Classes
- Thursday, June 11: Commencement
- Friday, June 19: Juneteenth—School Closed
List of 11 items.
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August 2026
- August 17: Admin Team Retreat
- August 19: Pre-Season Athletics (Football)
- August 20: Pre-Season Athletics (Varsity B/G Soccer and Volleyball)
- August 24: Pre-Season Athletics (JV B/G Soccer and Volleyball)
- August 24: New Faculty/Staff Orientation
- August 24-26: Peer Leadership Retreat
- August 31: Pre-Season Athletics (Tennis, Cross Country)
- August 31: Opening Faculty/Staff Meetings
- August 31: 9th Grade Newly Admitted Student Orientation (6:00 PM)
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September 2026
- September 1: 9th Grade Orientation
- September 2-4: 9th Grade Retreat at Brant Lake Camp
- September 3: Middle School New Student Orientation
- Monday, September 7: Labor Day—School Closed
- Wednesday, September 9: Classes Start
- Saturday, September 12: Rosh Hashanah—School Closed
- Saturday, September 19: Homecoming
- Monday, September 21: Yom Kippur—School Closed
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October 2026
- Monday, October 12: Columbus/Indigenous People’s Day—School Closed
- Tuesday, October 13 Professional Day—School Closed for students
- Friday, October 30: HS Report Writing (no HS classes)
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November 2026
- Sunday, November 8: Diwali—School Closed
- Thursday, November 12: FP Fall Conferences (FP early dismissal)
- Friday, November 13: FP/MS/HS Fall Conferences (no classes)
- Wednesday, November 25 – Friday, November 27: Thanksgiving Break—School Closed
- Monday, November 30: Classes Resume
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December 2026
- Friday, December 18: Candlelighting & Noon Dismissal
- Monday, December 21 – Friday, January 1: Winter Break
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January 2027
- Monday, January 4: Classes Resume
- Monday, January 18: MLK Jr. Day—School Closed
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February 2027
- Saturday, February 6: Lunar New Year—School Closed
- Sunday, February 7: Ramadan starts
- Friday, February 12: FP/MS/HS Report Writing Day (No classes)
- Monday, February 15: President’s Day—School Closed
- Tuesday, February 16: Professional Day—School Closed for Students
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March 2027
- Thursday, March 4: FP Winter Conferences (FP early dismissal)
- Friday, March 5: FP/MS/HS Winter Conferences (no classes)
- Tuesday, March 9: Eid al-Fitr – School Closed
- Monday, March 15 – Friday, March 26: Spring Break
- Friday, March 26: Good Friday – School Closed for Spring Break
- Sunday, March 28: Easter – School Closed for Spring Break
- Monday, March 29: Classes Resume
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April 2027
- Wednesday, April 7: 8th Grade Registration Conferences (no 8th grade classes)
- Thursday, April 22: Passover—School Closed
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May 2027
- Friday, May 14: FP Report Writing Day (no FP classes)
- Tuesday, May 18: Eid al-Adha—School Closed
- Monday, May 31: Memorial Day—School Closed
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June 2027
- Wednesday, June 9: Arch Day—Last Day of Classes
- Thursday, June 10 – Friday, June 11: Closing Meetings for Faculty & Staff
- Saturday, June 19: Juneteenth—School Closed
Grades K-3
53 East 91st Street, New York, NY 10128
Grades 4-12
108 East 89th Street, New York, NY 10128
Physical Education Center
200 East 87th Street, New York, NY 10128
