With the suspended winter term set to resume next week at many CEGEPs, Montreal police say they won't enforce certain clauses of Bill 78, Quebec's contentious student strike law, unless school authorities ask them to.

The law makes it an offence to organize or partake in a protest "that could result in" a student being blocked from a classroom, where the demonstration is in or within 50 metres of a school building. It is also an offence to "contribute to slowing down, degrading or delaying" university or college classes.

Violators face fines of $1,000 to $5,000 for individuals and up to $125,000 for a student or faculty association. The amounts double for a subsequent offence.

The measure was passed in May as the Liberal provincial government sought to contain the sometimes tumultuous protests stemming from Quebec's student crisis.

The Montreal Police Service said in a communiqué Friday evening that it won't take action on the provisions relating to demonstrations blocking or delaying access to schools, or others forcing professors to report to work, unless a school's administration makes a request for police intervention.

Spokesperson Cmdr. Ian Lafrenière said it wouldn't make sense to disperse protesters and free up an entry into a school building if, for example, classes were already cancelled.

"Imagine for a moment we force that entry, we get two platoons there to open a barricade to force the entry, and once we get in, we figure out that there's no classes. So that's why, if we do an intervention, it will be in co-ordination with the school authorities," he said.

"I know it might look stupid, but it's so basic: If you're using force to get people in, and in the end there's no people taking classes, that's not very helpful."

The police force said it will still enforce the Criminal Code, which addresses offences like unlawful public assemblies.

Bill 78, now also known as Law 12, has triggered widespread demonstrations across the province by people who didn't necessarily support the student cause, but were concerned by the legislation's restrictions on the right to protest.

Parents with their children, seniors, students, advocacy groups and labour federations have gathered in "casserole" protests where they bang pots and pans while marching through the streets.

The law has a sunset clause and expires next July 1.

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    Student protesters stage a sit-in as police in riot gear block off street access to the International Economic Forum of the Americas, an annual global summit that has drawn more than 3,000 participants from a dozen countries, in Montreal on June 11, 2012. For four months, students, joined by anti-capitalists, have held protests against plans by the Quebec provincial government to increase tuition fees by 75 percent. The forum is being held June 11-14. AFP PHOTO/ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)

  • Protesters face police in riot gear bloc

    Protesters face police in riot gear blocking off street access to the International Economic Forum of the Americas, an annual global summit that has drawn more than 3,000 participants from a dozen countries, in Montreal on June 11, 2012. For four months, students, joined by anti-capitalists, have held protests against plans by the Quebec provincial government to increase tuition fees by 75 percent. The forum is being held June 11-14. AFP PHOTO/ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)

  • Student protesters face police in riot g

    Student protesters face police in riot gear blocking off street access to the International Economic Forum of the Americas, an annual global summit that has drawn more than 3,000 participants from a dozen countries, in Montreal on June 11, 2012. For four months, students, joined by anti-capitalists, have held protests against plans by the Quebec provincial government to increase tuition fees by 75 percent. The forum is being held June 11-14. AFP PHOTO/ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)

  • Student protesters face police in riot g

    Student protesters face police in riot gear blocking off street access to the International Economic Forum of the Americas, an annual global summit that has drawn more than 3,000 participants from a dozen countries, in Montreal on June 11, 2012. For four months, students, joined by anti-capitalists, have held protests against plans by the Quebec provincial government to increase tuition fees by 75 percent. The forum is being held June 11-14. AFP PHOTO/ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)

  • Police use pepper spray and fight with protesters during an arrest on St. Catharines Street near the Montreal Grand Prix festival area Sunday, June 10, 2012, in Montreal. (AP Photo/The Canadian Press, Peter McCabe)

  • Demonstrators hold a sign displaying concern about sexual exploitation during a march protesting the Canadian Grand Prix auto race in Montreal, Saturday, June 9, 2012. (AP Photo/The Canadian Press, Peter McCabe)

  • A protester confronts police as he and others tried to enter the Grand Prix festival area of Montreal Friday, June 8, 2012. The protesters clashed briefly with the police and there were two arrests. Participants were trying to call attention to pro-democracy demonstrations in Bahrain Â-- and they criticized the racing circuit's role in that country. (AP Photo/The Canadian Press, Peter McCabe)

  • A protester confronts police as he and others tried to enter the Grand Prix festival area of Montreal Friday, June 8, 2012. The protesters clashed briefly with the police and there were two arrests. Participants were trying to call attention to pro-democracy demonstrations in Bahrain Â-- and they criticized the racing circuit's role in that country. (AP Photo/The Canadian Press, Peter McCabe)

  • Police arrest a demonstrator trying to disrupt the opening gala at the Canadian Grand Prix in Montreal on Thursday, June 7, 2012. (AP Photo/Ryan Remiorz, The Canadian Press)

  • Guests walk past riot police as they arrive the opening gala for the Formula One Canadian Grand Prix, which protesters tried to disrupt, in Montreal on Thursday, June 7, 2012. (AP Photo/The Canadian Press, Ryan Remiorz)

  • Police talk to a demonstrator as they take another, right, into custody before a cocktail party kicking off the Formula One Canadian Grand Prix festivities in Montreal, Canada, on Thursday, June 7, 2012. About 20 people were arrested and police said they confiscated light bulbs filled with paint. (AP Photo/Luca Bruno)

  • Police officers run toward demonstrators before a cocktail party kicking off the Formula One Canadian Grand Prix festivities in Montreal, Canada, on Thursday, June 7, 2012. About 20 people were arrested and police said they confiscated light bulbs filled with paint. (AP Photo/Luca Bruno)

  • Protesters march in the rain through the streets of Montreal to protest against bill 78 on Saturday, June 2, 2012. (AP Photo/The Canadian Press, Peter McCabe)

  • Protesters march in the streets of Montreal to demonstrate against tuition hikes and Quebec's Bill 78 aimed at controlling student demonstrations Wednesday, May 30, 2012 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson)

  • Protesters march in the streets of Montreal to demonstrate against tuition hikes and Quebec's Bill 78 aimed at controlling student demonstrations Wednesday, May 30, 2012 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson)

  • Demonstrators march down a street to protest against tuition hikes and Quebec's Bill 78 aimed at control student demonstrations on Tuesday, May 29, 2012, in Montreal. College and university students from Quebec and the provincial government returned to the bargaining table Tuesday for a second day of talks in an attempt to end a sometimes violent months-long dispute over tuition hikes. (AP Photo/The Canadian Press, Paul Chiasson)

  • Demonstrators march down a street to protest against tuition hikes and Quebec's Bill 78 aimed at control student demonstrations on Tuesday, May 29, 2012, in Montreal. College and university students from Quebec and the provincial government returned to the bargaining table Tuesday for a second day of talks in an attempt to end a sometimes violent months-long dispute over tuition hikes. (AP Photo/The Canadian Press, Paul Chiasson)

  • A lawyer addresses students following a march of hundreds of lawyers in the streets of Montreal to protest against Quebec's Bill 78 aimed at controlling student demonstrations Monday, May 28, 2012 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson)

  • Hundreds of lawyers march in the streets of Montreal to protest against Quebec's Bill 78 aimed at control student demonstrations Monday, May 28, 2012 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson)

  • Police keep watch as hundreds of lawyers march in the streets of Montreal to protest against Quebec's Bill 78 aimed at control student demonstrations Monday, May 28, 2012 in Montreal. (AP Photo/The Canadian Press, Paul Chiasson)

  • Student protesters stage a sit-in as pol

    Student protesters stage a sit-in as police in riot gear block off street access to the International Economic Forum of the Americas, an annual global summit that has drawn more than 3,000 participants from a dozen countries, in Montreal on June 11, 2012. For four months, students, joined by anti-capitalists, have held protests against plans by the Quebec provincial government to increase tuition fees by 75 percent. The forum is being held June 11-14. AFP PHOTO/ROGERIO BARBOSA (Photo credit should read ROGERIO BARBOSA/AFP/GettyImages)

  • Demonstrators march down a street to protest against tuition hikes and Quebec's Bill 78 aimed at control student demonstrations on Tuesday, May 29, 2012, in Montreal. College and university students from Quebec and the provincial government returned to the bargaining table Tuesday for a second day of talks in an attempt to end a sometimes violent months-long dispute over tuition hikes. (AP Photo/The Canadian Press, Paul Chiasson)