Heavy snow showers and blizzards over night and the forecast for more for up to 40 hours has led to some schools remaining closed on Friday.
So far, upper Calder Valley schools confirmed closed on Friday are:
Colden J & I School
Old Town Primary
Heptonstall J, I & N School
Luddenden Dene CE (VC) J, I & N School
Wood Bank School, Luddendenfoot
Todmorden High School say they will monitor the situation throughout the day and ask students to wear sensible footwear.
Calder High is open as normal.
Keep checking back for updates.