In order to note holidays in your calendar, start by creating an event (Log in and visit Calendar > Add Event).
The date you select should be the date of your holiday (for example: Jan 1, 2011). For noting a holiday, your start time should always be 12:00AM and end date should be 11:59PM. Do not assign a teacher to this event (if there is no teacher assigned, it should show up on all teacher accounts and will not provide any conflicts or scheduling problems).
And there you have it: holidays are all present and accounted for! Please let us know if you need more clarification, we’re happy to help.