Teenagers across the country were sitting exams on Monday as schools and colleges made valiant attempts to stay open despite the snowy conditions.

The "vast majority" of GCSE and A-level papers scheduled to take place were going ahead as planned, according to the exams regulator Ofqual.

While thousands of schools were forced to shut as the snow continued to fall, others were taking action to ensure that pupils could sit exams they have been preparing for over the last few months.

In some cases, schools were only opening for exam candidates.

One bunch of students refused to be beaten by their headteacher, even starting a Twitter campaign to get the school shut, but unfortunately to no avail.

Union leaders said schools "almost invariably find a way" to ensure that pupils can sit papers, even if it means finding an alternative venue.

A number of exams are due to take place today, including papers for A-level psychology, A-level biology, A-level geography, GCSE geography and GCSE information and communication technology (ICT).

An Ofqual spokesman said: "The vast majority of exams are going ahead as scheduled.

"The message to send to schools and colleges is to keep in touch with your exam board, and let them know what the situation is."

Brian Lightman, general secretary of the Association of School and College Leaders (ASCL), said that individual headteachers will be making the decision about whether to stay open.

"I think schools are trying very hard to do everything they can to stay open, particularly when they've got things like exams going on.

"The safety of children on the school premises is paramount and headteachers have to do a risk assessment to ensure there will be proper supervision.

"Where there's a worry about that, that's what informs a decision to close the school. You cannot have children unsupervised in school."

Lightman said that when headteachers feel they have to close, they always take issues like exams into consideration.

There is "almost always" a member of staff who can open up the school so that classes can be laid on for students taking exams, he said.

"When there are actual external exams taking place almost invariably schools will find a way to ensure that students can take those exams."

Lightman said he has heard of cases in the past where schools have found another place for students to sit papers.

Students who are unable to take their exams today will have to wait until the summer for the next chance to sit them, according to advice given to schools by the Joint Council for Qualifications (JCQ).

In a document published on its website, JCQ, which represents the biggest exam boards in the UK, says rescheduling exams is "not an option".

"It is important to note that rescheduling examinations is not an option due to the consequences this would have across the system," it says.

"For example, it would reduce significantly the amount of time schools and colleges have to teach, and students to learn, in preparation for the summer examination series.

"The integrity of the question papers could also be compromised. The task of ensuring that all schools and colleges do not offer the examinations on the original scheduled date would be difficult to undertake and guarantee."

Plans are in place for students who cannot sit exams today due to bad weather to take them in the summer, or if it was their final chance to sit the paper they can apply for special consideration, JCQ's advice said.

This means they can ask their exam board to take into consideration the circumstances and to be graded on the work they have already done.

JCQ director Michael Turner said: "Awarding bodies have procedures in place to deal with disruption to exams caused by the snow and ice that is affecting large parts of the country.

"These well-rehearsed processes ensure students are not disadvantaged.

"In the majority of case exams will go ahead as usual, but where conditions are so severe that schools are closed or students are unable to make it to their exams, alternative arrangements are available. This may include holding the exam at an alternative venue or students taking it later in the year.

"In extreme cases, special consideration may be applied for."

Councillor David Simmonds, chair of the Local Government Association's children and young people board, said: "Routes to large schools are gritting priorities for local authorities as they know how important keeping them open is, both in terms of continuity of teaching for pupils and avoiding costly and disruptive childcare for parents.

"Ultimately, headteachers, in consultation with school governors, make the final decision on whether or not to close a school. This is based on a range of local circumstances including the number of teachers who can make it into work safely, dangerous road conditions, or problems with vital supplies such as food, heating or water."

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  • Winter weather Jan 25

    A man uses a tractor as he tries to try and keep the roads open in Tanfield, Durham as more snows falls in the UK.

  • Winter weather Jan 25

    A woman digs her way out after more snow falls today in Tanfield County, Durham.

  • Winter weather Jan 25

    A woman digs her way out after more snow falls today in Tanfield County, Durham.

  • Winter weather Jan 25

    A man uses a tractor as he tries to try and keep the roads open in Tanfield, Durham as more snows falls in the UK.

  • Winter weather Jan 25

    A woman digs her way out after more snow falls today in Tanfield County, Durham.

  • Winter weather Jan 25

    A woman digs her way out after more snow falls today in Tanfield County, Durham.

  • Winter weather Jan 25

    Two woman battle through the snow after more snow falls today in Tanfield County Durham.

  • Winter weather Jan 25

    A man shovels snow after more snow falls today in Tanfield County Durham.

  • Winter weather Jan 25

    A woman digs her way out after more snow falls today in Tanfield County, Durham.

  • Winter weather - Jan 22nd

    A man struggles in the snow as he walks past the starters box on the PGA Centenary Course after more snowfall today at Gleneagles Hotel in Perthshire. The course will be used for the 2014 Ryder Cup.

  • Winter weather - Jan 22nd

    A road traffic sign covered in snow and ice at Spring Cottage, Derbyshire as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    People struggle in the snow with shovels on a golf course at Gleneagles after more snowfall today in Perthshire.

  • Winter weather - Jan 22nd

    A man struggles in the snow as he walks past the starters box on the PGA Centenary Course after more snowfall today at Gleneagles Hotel in Perthshire. The course will be used for the 2014 Ryder Cup.

  • Winter weather - Jan 22nd

    A man walks his dog near Auchterarder, Perthshire after heavy snowfall overnight.

  • Winter weather - Jan 22nd

    Loggers Trucks collect trees in Kielder Forest, Northumberland where snow fell overnight.

  • Winter weather - Jan 22nd

    Snow and ice cover barges and boats at Foxton Locks in Market Harborough, Leicestershire as the winter weather continues across the UK

  • Winter weather - Jan 22nd

    General view of a street in Pricetown, Dartmoor, as snow starts to fall again.

  • Winter weather - Jan 22nd

    Don Clegg, 80, clears snow from his drive in Kielder, Northumberland as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    Loggers Trucks battle up the hill in Kielder Forest, Northumberland where snow fell overnight.

  • Winter weather - Jan 22nd

    A man fits snow chains to his car in preparation for driving in hazardous conditions as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    Don Clegg, 80, in his garden in Kielder, Northumberland as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    Loggers Trucks collect trees in Kielder Forest, Northumberland where snow fell overnight.

  • Winter weather - Jan 22nd

    Loggers Trucks collect trees in Kielder Forest, Northumberland where snow fell overnight.

  • Winter weather - Jan 22nd

    Mum Stephanie Koch (right) and daughter Kadie 4 enjoy the snow in Kielder, Northumberland as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    Dogs walking in Innerleithen, the Scottish Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    A car sets off down a snow covered road in the Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    A snow covered road in Galashiels the Scottish Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    A horse runs along a snow covered field in the Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    Sheep look for food in the Scottish Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    A snow covered road in Galashiels the Scottish Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    A car sets off down a snow covered road in the Borders as snow showers hit the East of Scotland.

  • Winter weather - Jan 22nd

    Mum Stephanie Koch (right) and daughter Kadie 4 enjoy the snow in Kielder, Northumberland as the winter weather continues across the UK.

  • Winter weather - Jan 22nd

    Snow and ice cover Foxton Locks in Market Harborough, Leicestershire as the winter weather continues across the UK

  • Winter weather - Jan 22nd

    Snow and ice cover Foxton Locks in Market Harborough, Leicestershire as the winter weather continues across the UK

  • BRITAIN-WEATHER-SNOW

    A woman walks a dog through a snow covered Rose Garden at The Arno in Birkenhead, northwest England, on January 21, 2013. Britain is braced for a continuation of the bad weather which has left closed schools and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

  • UK Hit By Heavy Snow Fall

    NOTTINGHAM, UNITED KINGDOM - JANUARY 21: Freddy the Boston Terrier plays in the snow on January 21, 2013 in Nottingham, United Kingdom. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Laurence Griffiths/Getty Images)

  • UK Hit By Heavy Snow Fall

    NOTTINGHAM, UNITED KINGDOM - JANUARY 21: Canada Geese fly from the snow covered banks of the River Trent on January 21, 2013 in Nottingham, United Kingdom. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Laurence Griffiths/Getty Images)

  • UK Hit By Heavy Snow Fall

    NOTTINGHAM, UNITED KINGDOM - JANUARY 21: Wild birds feed on the snow covered banks of the River Trent on January 21, 2013 in Nottingham, United Kingdom. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Laurence Griffiths/Getty Images)

  • UK Hit By Heavy Snow Fall

    LONDON, UNITED KINGDOM - JANUARY 21: A snowman complete with cigarette and coffee cup is viewed by a squirrel in St James's Park on January 21, 2013 in London, England. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Peter Macdiarmid/Getty Images)

  • UK Hit By Heavy Snow Fall

    NOTTINGHAM, UNITED KINGDOM - JANUARY 21: Canada Geese fly from the snow covered banks of the River Trent on January 21, 2013 in Nottingham, United Kingdom. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Laurence Griffiths/Getty Images)

  • UK Hit By Heavy Snow Fall

    LONDON, UNITED KINGDOM - JANUARY 21: A woman walks on Birdcage Walk as snow falls on January 21, 2013 in London, England. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Peter Macdiarmid/Getty Images)

  • BRITAIN-WEATHER-SNOW

    Models pose around a plastic palm tree in the snow in front of Tower Bridge in central London on January 21, 2013, during a 'pop-up beach resort' promotion on the day that many consider to be the most depressing day of the year. Britain is braced for a continuation of the bad weather which has schools closed and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

  • BRITAIN-WEATHER-SNOW

    A woman walks a dog through a snow covered Rose Garden at The Arno in Birkenhead, northwest England, on January 21, 2013. Britain is braced for a continuation of the bad weather which has left closed schools and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

  • BRITAIN-WEATHER-SNOW

    People walk a dog through a snow covered Arrowe Park in Birkenhead, northwest England, on January 21, 2013. Britain is braced for a continuation of the bad weather which has left closed schools and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

  • BRITAIN-WEATHER-SNOW

    A woman walks a dog through a snow covered Rose Garden at The Arno in Birkenhead, northwest England, on January 21, 2013. Britain is braced for a continuation of the bad weather which has left closed schools and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

  • UK Hit By Heavy Snow Fall

    NOTTINGHAM, UNITED KINGDOM - JANUARY 21: Canada Geese fly past the snow covered banks of the River Trent on January 21, 2013 in Nottingham, United Kingdom. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Laurence Griffiths/Getty Images)

  • UK Hit By Heavy Snow Fall

    LONDON, UNITED KINGDOM - JANUARY 21: A man walks on The Blue Bridge over the partially frozen lake in St James's Park on January 21, 2013 in London, England. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Peter Macdiarmid/Getty Images)

  • BRITAIN-WEATHER-SNOW

    People walk a dog through a snow covered Arrowe Park in Birkenhead, northwest England, on January 21, 2013. Britain is braced for a continuation of the bad weather which has left closed schools and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / PAUL ELLIS (Photo credit should read PAUL ELLIS/AFP/Getty Images)

  • BRITAIN-WEATHER-SNOW

    Models in swimwear pose in the snow at a 'pop-up beach resort' promotion in front of Tower Bridge in central London on January 21, 2013. Britain is braced for a continuation of the bad weather which has schools closed and caused transport chaos in recent days, with several weather warnings in place. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

  • UK Hit By Heavy Snow Fall

    LONDON, UNITED KINGDOM - JANUARY 21: Pigeons look for food in a snowy St James's Park on January 21, 2013 in London, England. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Peter Macdiarmid/Getty Images)

  • UK Hit By Heavy Snow Fall

    LONDON, UNITED KINGDOM - JANUARY 21: Pigeons try to keep out of the snow by resting on a signpost in St James's Park on January 21, 2013 in London, England. The United Kingdom has suffered a weekend of heavy snowfall with many transport routes affected. (Photo by Peter Macdiarmid/Getty Images)