The workload figure excludes time spent preparing lessons, attending meetings and marking pupils' work.
And more time is now spent on lessons that engage the whole class (as opposed to letting pupils work alone).
The counselling service Teacherline says the big factors are Ofsted inspections, too much work, aggressive pupils and parents.
He thinks vending machines can undermine the work being done with pupils.
BBC: Vending machines in schools often sell high-fat products
Mr Dover said classrooms would have to be moved around but the plan was to avoid sending pupils home while work was carried out.
This summer's English GCSEs were a new modular qualification, with pupils sitting written exam papers and controlled assessment, and schools decided when pupils submitted that assessment work and sat exams.
BBC: GCSE English: Teachers' anger over generous marking claim
Senior staff said they had good records of the work and believed pupils could still be marked.
BBC: Dorset 'lightning strike' school to stay shut for new term
Senior staff previously said they had good records of the work and believed pupils could still be marked.
In some schools teachers are also told to take time off if they have an illness which might be passed on to their pupils, even though they might be willing to work.
She said, at the most basic level, lack of a home internet connection or a computer could mean that children struggled to research homework or complete coursework and were unable to access school websites which allow pupils to submit work digitally and receive feedback from teachers.
About 25, 000 teachers have stopped work, keeping 350, 000 pupils out of school.
There is also a question over the type of work experience that will be available to pupils with special needs.
Its report says teachers in some of England's secondary schools were guilty of "significantly" over-marking pupils' GCSE English work this summer in order to boost results.
BBC: GCSE English: Teachers' anger over generous marking claim
Andrew Sortwell, Northamptonshire County Council director for children and young people, said it would continue the counselling work already started with Aaron's fellow pupils and staff.
BBC: NEWS | UK | England | Northamptonshire | Tribute to Ecuador death teenager
In exam regulator Ofqual's final report on the issue, it was suggested that teachers in England were "significantly" over-marking pupils' GCSE English work this summer in order to boost results.
Mr Beswick believes that formally introducing children to the basics of the subject at primary school, will help inspire more pupils to take it to degree level and ultimately the world of work.
BBC: Primary pupils 'should learn computing', says Microsoft
Pupils have been set work to complete while they are unable to attend lessons.
The pupils have also put on display the design work and plans for each project.
Studio schools cater for pupils aged 14-19, combining academic studies and work-based training.
The IB Diploma has also stimulated a new way of learning for many pupils as they have noticed the need for more work outside of the classroom.
BBC: NEWS | UK | Education | Schools' first terms with the IB
In countries where schools mainly seek to teach pupils to read, write and grasp some basic maths, centralisation seems to work.
Mr Hughes said he had wanted to motivate pupils to work hard, but also to have fun and be part of something.
He said among the 15 people who died were 3 pupils and two of their teachers who had stayed behind to finish off some work.
This will include scanning and speech synthesiser equipment and hand-held spell checkers - and in some cases, pupils will be able to keep equipment for use in work when they leave school.
There had been a rush to banding which resulted in undermining the hard work of teachers, pupils and parents but "very little actual support", he added.
BBC: Wales school banding is a failure, teaching unions claim
In a settlement announced Wednesday by the National Women's Law Center, the university agreed to send a memo to all professors and administrators reminding them that all schools getting government funding are required to give pregnant students the same options to make up work that they give to pupils who suffer illnesses or injuries that cause them to miss classes.
In a settlement agreement announced Wednesday by the National Women's Law Center, the university agreed to send a memo to all professors and administrators reminding them that all schools getting government funding are required to give pregnant students the same options to make up work that they give to pupils who suffer illnesses or injuries that cause them to miss classes.
In interviews, pupils said they valued producing high-quality creative work, with a few even looking forward to homework.
Pupils at the school have been given work to do at home via social networking sites such as Twitter.
The visitors tried to ensure that teachers showed up to work, that classes took place, and that pupils received their textbooks more or less on time.
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