TORONTO -- More of Ontario's schools are reopening to in-person learning today.

Students in 13 public health units, including Hamilton and Windsor, will return to physical classrooms.

But in three COVID-19 hot spots -- Toronto, Peel and York Region -- schools will remain closed until Feb. 16.

All students in Ontario began January with online learning as part of a provincial lockdown.

The province then took a staggered approach to reopening schools, allowing those in northern Ontario and rural areas to resume in-person learning first.

Education Minister Stephen Lecce says the government is taking a number of steps to enhance safety in schools, such as more stringent screening for high schoolers and asymptomatic testing across the province.