* Teacher training or professional development: Teachers participate in workshops or meetings.
* Administrative tasks: The school uses the day for administrative work, like staff meetings or record-keeping.
* Holidays: Schools are closed for holidays that are not necessarily public holidays.
* Emergency closures: Due to weather, power outages, or other unforeseen events.
* Planning days: Teachers use the day to plan lessons and curriculum.
Essentially, it's a day off from regular classes for students, even if staff might be present on campus for other reasons.