Academic Program Calendar

​Fall Semester 2024
  • Course Payment Due & Last Day for Full Refund – August 31, 2024 at 5:00pm ET
  • Fall Semester Classes Start – September 9, 2024
  • Registration Closes/Last Day to Withdraw with 50% Refund/Last Day for Course Change Requests – September 20, 2024 at 5:00pm ET
  • Quarter 1 Ends – November 1, 2024
  • Mid-Semester Report Published – November 8, 2024
  • Quarter 2 Ends and Final Day to Complete Semester – December 13, 2024
  • Semester I Report Published – December 20, 2024

Spring Semester 2025
  • Classes Resume – January 21, 2025
  • Quarter 3 Ends – March 14, 2025
  • Mid-Semester Report Published – March 21, 2025
  • Quarter 4 Ends and Final Day to Complete Semester – May 2, 2025
  • Semester II Report Published – May 9, 2025
​Please note: There is no time off for fall or spring breaks. Please see our Late Work Policy for more information; AP® courses continue with review between the end of class and the day of the course’s AP® examination.
Summer 2025
  • Course Payment Due & Last Day for Full Refund - May 31, 2025 at 5:00pm ET
  • Summer Classes Start – June 16, 2025
  • Registration Closes/Last Day to Withdraw with 50% Refund/Last Day for Course Change Requests – June 20, 2025 at 5:00pm ET 
  • Midterm Grading Period Ends – July 11, 2025 
  • Mid-Term Report Published for Students and Parents/Guardians – July 18, 2025
  • Last Day of Session – August 8, 2025
  • Final Report Published for Students and Parents/Guardians – August 15, 2025
Fall Semester 2025
  • Last Day for Full Refund/Course Payment Due – August 31, 2025 at 5:00pm ET
  • Fall Semester Classes Start – September 8, 2025
  • Registration Closes/Last Day to Withdraw with 50% Refund/Last Day for Course Change Requests – September 19, 2025 at 5:00pm ET
  • Quarter 1 Ends – October 31, 2025
  • Mid-Semester Report Published – November 7, 2025
  • Quarter 2 Ends and Final Day to Complete Semester – December 12, 2025
  • Semester I Report Published – December 19, 2025

Spring Semester 2026
  • Classes Resume – January 20, 2026
  • Quarter 3 Ends – March 13, 2026
  • Mid-Semester Report Published – March 20, 2026
  • Quarter 4 Ends and Final Day to Complete Semester – May 1, 2026
  • Semester II Report Published – May 8, 2026

Please note: There is no time off for fall or spring breaks. Please see our Late Work Policy for more information; AP® courses continue with review between the end of class and the day of the course’s AP® examination.

Summer 2026
  • Last Day for Full Refund/Course Payment Due – May 31, 2026
  • Summer Classes Start – June 15, 2026
  • Registration Closes/Last Day to Withdraw with 50% Refund/Last Day for Course Change Requests – June 19, 2026 at 5:00pm ET
  • Midterm Grading Period Ends – July 10, 2026
  • Mid-Term Report Published for Students and Parents/Guardians – July 17, 2026
  • Last Day of Session – August 7, 2026
  • Final Report Published for Students and Parents/Guardians – August 14, 2026

Office Calendar

​One Schoolhouse is based in Washington D.C., and its office operates on Eastern Time. The office is open from 9:00 a.m. to 4:00 p.m. ET each day. Knowing that many of our students, schools, and families come from many time zones, we make every effort to answer calls after hours as well, though we ask for your patience and understanding if we cannot give you immediate help or information after hours.

The office is closed on most United States holidays, including the below dates.  If classes are running during these times, they remain active.

2024
January 15, 2024 – Dr. Martin Luther King Jr. Day
February 19, 2024 – President’s Day
May 3, 2024 – One Schoolhouse Closed
May 10, 2024 – One Schoolhouse Closed
May 17, 2024 – One Schoolhouse Closed
May 24, 2024 – One Schoolhouse Closed
May 27, 2024 – Memorial Day
June 19, 2024 – Juneteenth
July, 4, 2024 - Independence Day
September 2, 2024 - Labor Day
October 14, 2024 – Indigenous People’s Day
November 27-29, 2024 – Thanksgiving
December 23 – January 1, 2025 – Winter Holiday

2025
January 20, 2025 – Dr. Martin Luther King Jr. Day
February 17, 2025 – President’s Day 
May 26, 2025 – Memorial Day 
June 19, 2025 – Juneteenth 
July 4, 2025 – Independence Day 
September 1, 2025 – Labor Day 
October 13, 2025 – Indigenous People’s Day
November 26-28, 2025 – Thanksgiving
December 24, 2025 – January 4, 2026 – Winter Holidays

2026
January 19, 2026 – Dr. Martin Luther King Jr. Day 
February 16, 2026 – President’s Day
May 25, 2026 – Memorial Day 
June 19, 2026 – Juneteenth 
July 3, 2026 – Independence Day 
September 7, 2026 – Labor Day 
October 12, 2026 – Indigenous People’s Day 
November 25-27, 2026 – Thanksgiving 
December 24, 2026 – January 3, 2027 – Winter Holidays