The Hillsborough Board of Education approved a calendar change at Monday's meeting, adding a day of classes for students at Woodfern School.
The change was needed because the school was closed for a day Jan. 31, when the power supply to the school was out.
But all other Hillsborough schools will be closed Monday for the President's Day holiday—which means the municipal building, Hillsborough Public Library, the Hillsborough Post Office and most banks will also be closed (TD Bank customers can still cash checks).