Calendar
HeadStart follows the traditional UK academic calendar with three terms:
Sept-Dec; Jan-April; May-July, The school also observes Thai Public Holidays.
HeadStart operates five days a week from 08:15 to 15:45.
Term 116 Weeks / 75 Days
| August 26th | Friday | Parent Orientation Day |
| August 29th | Monday | Term 1 Starts |
| October 20th—21st | Thursday | Pupil Half-Term Break |
| October 24th | Monday | Subst. for Chulalongkorn Day |
| December 5th | Monday | The King’s Birthday |
| December 12th | Monday | Subst. for Constitution Day |
| December 15th | Thursday | Sports Day |
| December 16th | Friday | Target Setting Day (Last day of Term 1) |
| Term 1 Holiday (3 Weeks) December 17th, 2011 — January 8th, 2012: Term 1 Holiday |
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Term 213 weeks / 61 Days
| January 9th | Monday | Term 2 Starts |
| February 16th—17th | Thursday | Pupil Half-Term Break |
| March 7th | Tuesday | Makha Bucha Day |
| April 4th | Wednesday | Sports Day |
| April 5th | Thursday | Target Setting Day (Last day of Term 2) |
| April 6th | Friday | Chakri Day |
| Term 2 Holiday (2 Weeks) April 6th, 2012 — April 22nd, 2012: Term 2 Holiday |
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Term 311 Weeks / 51 Days
| April 23th | Monday | Term 3 Starts |
| May 7th | Monday | Coronation Day |
| May 31th — June 1st | Thursday | Pupil Half-Term Break |
| June 4th | Wednesday | Wisakha Bucha Day |
| July 4th | Wednesday | Target Setting Day |
| July 5th-6th | Thursday | Sports and Activities Days |
| July 6th | Friday | Last Day of Term 3 |
| Term 3 Holiday (7 weeks) July 7th, 2012 — August 26th, 2012: Summer Holiday |
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August 27th – First Day of 2012 Academic Year
