(a) Teachers shall be entitled to use up to an overall maximum of five (5) days of accumulated sick leave per school year to attend to the illness or injury of that teacher’s spouse, common-law partner, children, parents, brother, sister, grandchildren or grandparents whether the family member is natural, in-law, step or foster. Where such cases occur, entitlement under this article may not be accessed concurrently by both caregivers who are teachers within the scope of this Agreement.