All 91原创 public schools were closed for the third day in a row on Friday, Jan. 19, the school district announced.

The closure includes the school board office, the 91原创 Education Centre, and all early learning and daycare programming on district properties, according to an announcement on the district website.

Facility rentals are cancelled for the day.

Many factors are considered when deciding a school closure, said the 91原创 School District in a statement to the 91原创 Advance Times.

鈥淚n general, considerations include weather, road conditions, the timing of a snow fall, or in this situation the timing of freezing rain, the ability for school busses to make trips to pick-up and drop-off students, accessibility to the school by vehicle and on foot, health and safety of students and staff, among other things,鈥� the statement reads.

The district follows procedures set in the guide as well, which also covers power outages, structural integrity of the school building, and severe emergencies like an earthquake.

鈥淚t is important to note that the 91原创 School District stretches a wide geographic area from the Fraser River to the U.S. border. On Friday morning, the District noted some areas in 91原创 are in good shape, however, there are many areas in South 91原创 and East 91原创 that have poor conditions,鈥� concluded the statement.

Districts in the Fraser Valley are also announcing closures due to the forecasted weather and sidewalk and side road conditions.

A prolonged period of freezing rain is expected for the Fraser Valley this afternoon, Friday, Jan. 19.

According to a weather warning from Environment Canada, the rain is forecast for Mission, Abbotsford, Chilliwack, Agassiz, 91原创 and Hope.

Environment Canada says the freezing rain is expected to persist through Friday morning over Abbotsford, and Friday afternoon over Chilliwack, then transition to rain.

Many private schools were also closed, including The King鈥檚 School in Milner, Credo Christian in Murrayville, and St. Catherine鈥檚 Elementary in Brookswood.

At the post-secondary level, Trinity Western University鈥檚 91原创 campus was open for essential services and some in-person classes. The TWU website advised students to check their Moodle site for info on how to access their classes.

Kwantlen Polytechnic opened all its campuses, including its 91原创 campus.

Environment Canada advises that surfaces such as highways, roads, walkways and parking lots may become icy and slippery.

鈥淭ake extra care when walking or driving in affected areas. Be prepared to adjust your driving with changing road conditions,鈥� the warning reads.

READ ALSO: Burst pipes cause chaos, including at 91原创 seniors centre

READ ALSO: VIDEO: Breaking the ice at 91原创 City鈥檚 Brydon Lagoon