Academic Calendar

For-credit Summer 2021
  • Last Day for Full Refund/Course Payment Due:  June 11, 2021
  • Summer Classes Start – June 14, 2021
  • Registration Closes/Last Day to Withdraw with 50% Refund – by the close of business June 18, 2021
  • Mid-Term Grading Period Ends – July 9, 2021
  • Mid-Term Report Published for Students and Parents/Guardians – July 16, 2021
  • Last Day of Session – August 6, 2021
  • Final Report Published for Students and Parents/Guardians – August 13, 2021

Fall Semester 2021
  • Last Day for Full Refund/Course Payment Due – September 10, 2021
  • Fall Semester Classes Start – September 13, 2021
  • Registration Closes/Last Day to Withdraw with 50% Refund – by close of business September 24, 2021
  • Quarter 1 Ends – October 29, 2021
  • Mid-Semester Report Published – November 5, 2021
  • Quarter 2 Ends and Final Day to Complete Semester Including Exam – December 14, 2021
  • Semester I Report Published – December 22, 2021

Spring Semester 2022
  • Classes Resume – January 18, 2022
  • Quarter 3 Ends – March 11, 2022
  • Mid-Semester Report Published – March 18, 2022
  • Quarter 4 Ends and Final Day to Complete Semester Including Exam – April 29, 2022
  • Semester II Report Published – May 9, 2022

Please Note: There is no time off for fall or spring breaks.  Please see below for our Late Work Policy and how to handle extenuating circumstances that might arise during a school’s breaks; AP® courses continue with review between the end of class and the day of the course’s AP® examination.​

Office Schedule & 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 5:00 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.

2021
​January 18, 2021 – Martin Luther King Jr. Day
February 15, 2021 – American Presidents’ Day
May 31, 2021 – American Memorial Day
July 5, 2021 – American Independence Day
September 6, 2021 - American Labor Day
October 11, 2021 - Indigenous Peoples' Day
November 24-26, 2021 – American Thanksgiving Holiday
December 23, 2021 - January 2, 2022 -- Winter Holiday

2022
January 17, 2022 – Dr. Martin Luther King Jr. Day
February  14, 2022 – American Presidents’ Day
May 30, 2022 – American Memorial Day
July 4, 2022 – American Independence Day
September 5, 2022 – American Labor Day
October 10, 2022 - Indigenous Peoples' Day
November 23-25, 2022 – American Thanksgiving Holiday
December 23, 2022 - January 3, 2023 -- Winter Holiday