COVID-19 pandemic, at least one Toronto-area board said it has had to ask administrators, specialty teachers and lunch supervisors to step in.The Toronto Catholic District school board said those measures have been taken on some occasions to “ensure the safety of students and staff” as it strives to broaden its pool of occasional, or supply, teachers.“Like many boards across the province, the TCDSB continues to bolster its occasional teacher roster but struggles to address challenges associated with increased teacher absences, greater incidences of short-term sick leave, and an unwillingness of available occasional teachers to accept daily jobs during this pandemic,” the board said in a statement Tuesday.