Administrative users are able to create school calendars that affect how deadlines are calculated. Buildings can have their own building-specific calendar, otherwise each district will have a District Default calendar.
When deadlines are calculated for a student, they will be calculated based off the calendar that their current building uses. If a student is moved to a different building (i.e. when they move from middle school to high school), their deadlines will be recalculated based off the calendar for their new building (after a short delay).
If a building does not have a building-specific calendar, its deadlines will be calculated based on the District Default calendar. If a building has at least one building-specific calendar, deadlines will be calculated based on the building calendars. This means that once building-specific calendars are added for a building, an administrative user will need to maintain the calendars and continue to add new building calendars for each new school year or deadlines will not calculate correctly.