Substitute teacher Hannah Bauer helps kindergarteners Hallie Timmerman, left, and Adalynn Elpert with a math worksheet at Bonner Elementary School on Wednesday, Jan. 19, 2022, in Stewartville. "It's not uncommon for us to have more positions open than we have substitutes," said Zane McInroy, the school's principal. McInroy said two subs were working at the school on Wednesday.