The Greater Essex County District School Board is reminding all of its students to dress warm and cozy on Thursday.
The board will be taking part in National Sweater Day on Feb. 1.
As part of the day, thermostats in schools and administrative buildings will be turned down slightly, approximately two degrees Celsius.
Students and staff are encouraged to wear a cozy, comfortable sweater on that day.
National Sweater Day is observed to raise awareness about renewable energy and adjust behaviours around energy consumption in Canada.
Board spokesperson Scott Scantlebury told AM800's The Morning Drive that it's a symbolic move to highlight the efforts to reduce greenhouse gas emissions.
:That one day of reducing temperatures by 2 degrees can have a dramatic impact on the greenhouse gas emissions that we have on that day itself. Up to 700,000 metric tonnes," he says.
Scantlebury says that they've been observing the days for several years now.
"It's become a bit of a celebration of our environmental plan and it's symbolic in that way. It's a celebration of the things we're doing to try and reduce our carbon footprint overall," he says.
According to a release from the school board, if all Canadians lowered the building temperature by just 2 degrees Celsius it would reduce greenhouse gas emissions by close to four megatons - equivalent to taking nearly 700,000 cars off the road.
Some schools within the Windsor-Essex Catholic District School Board are also taking part in National Sweater Day.