A DUP MP has questioned whether schools could do more to stay open during wintry weather.
On Thursday children from 140 schools - mainly in Antrim, Down and Tyrone - had the day off as up to 10cm of snow fell in some areas.
Co Antrim was worst affected where 50 schools closed.
South Antrim MP William McCrea said: “Obviously it causes massive inconvenience for parents when there are school closures announced at the last minute.
“It involves parents having to reorganise their schedules for the day if both parents are working, however, schools have to take into consideration the safety of children.”
The DUP representative added: “Most people do ask the question why 10 per cent of schools close when there is the slightest hint of frost or snow, yet that is not reflected in the business sector or indeed many other walks of life.”
Further sleet and snow showers are expected across much of Northern Ireland on Saturday and Sunday.
These are likely to be accompanied by strong winds, causing snow to drift on higher ground. On Saturday morning there is a warning of hazardous driving conditions on untreated roads.