30 students dismissed from Windsor Catholic elementary school following COVID-19 case A class and bus cohort have been dismissed following a positive COVID-19 case at Immaculate Conception Catholic Elementary School Wednesday. Social Sharing CBC News · Posted: Mar 10, 2021 8:29 PM ET | Last Updated: March 11 The Catholic school board says the health unit will be in contact with those who are affected and provide them with further directions to follow. (Sanjay Maru/CBC)