Why is it important to add all Holidays and No-School Days to the Veracross school-calendar?
Because Veracross maintains several enrollment/attendance calculations that depend on having an accurate count of total in-school days. For example, some state-reports require enrollment/attendance percentages for both individual students as well as roll-ups for the entire school. The only way these numbers will be accurate is if the Veracross school-calendar contains events for all days on which there is no school.