FILE PHOTO: Parents fill the role of substitute teacher during

FILE PHOTO: Marisela Maddox, a parent of students Atlas and Hero Smookler, works as a substitute teacher at the Austin Jewish Academy as the spread of the Omicron variant leads to teacher shortages amid the coronavirus disease (COVID-19) pandemic in Austin, Texas, U.S., January 20, 2022. REUTERS/Callaghan O’Hare