Some Ontario students missed nearly 1 month of school because of snow days this winter

Some Ontario children missed nearly a month of school this winter because of snow days — an impact they're likely now feeling, educators say, as teachers rush to get through the remaining curriculum before the academic year ends.

Winter conditions kept students home in parts of southwestern and central Ontario for up to 27 days over the past year. 

In some cases, that was because the school itself closed, while in others, it was because school buses were cancelled. Provincewide, upwards of 830,000 children rely on these buses to get to and from their schools, according to the non-profit School Bus Ontario.

"It certainly presents challenges to learning," said Christopher Walkling, a principal with the Near North District School Board.

Walkling told CBC Toronto the number of snow days this year was higher than in recent years. However, it was far from record-breaking.

The Near North board is one of four that relies on buses provided by Nipissing Parry Sound Student Transportation Services (NPSSTS), which shuttles children to school in Parry Sound, West Nipissing, North Bay, East Ferris and Mattawa. 

Bus cancellations due to snow were location-dependent and ranged between 14 and 26 days during the 2024-2025 academic year, a spokesperson told CBC Toronto. That's not quite as high as the 2021-2022 academic year, which saw cancellations ranging between 29 and 43 days.

Record-breaking or not, those Ontario figures are "extraordinarily high," said Joshua Goodman, an associate professor at Boston University who studied the impact of snow days on student success in Massachusetts.

Goodman used data on school performance and closures in about half of Massachusetts public schools from 2003 to 2010.

His research found that snow days where schools completely close in Massachusetts had little impact on student learning. Goodman did find indications that individual absences when schools remained open during bad weather were related to lower performance, particularly in math. "A full blown closure for a day actually is a little bit easier to deal with because everyone is on the same page the day you come back," he said. But with Massachusetts only seeing roughly one to five snow days over the course of the study, his findings may not apply to the large number of snow days Ontario students faced.

"There's almost no world in which we could ever have that level of disruption," Goodman said.

Mike Foulds, president of the Ontario Teachers' Federation, says he's seen it firsthand.

The Owen Sound high school where Foulds normally teaches social sciences at the Bluewater District School Board had 27 snow days this year — the highest number of snow days the school has seen in the last decade, according to a tracking dashboard his colleague created.

It's one of several schools in Grey and Bruce counties with that many snow days, according to the school board.