Question: Problem: The emphasis on data in England's schools does nothing to boost learning, said Association of Teachers and Lecturers leader Mary Bousted.
Dr Bousted called on the government to cut this workload to make teaching a more attractive profession.
Ministers have promised measures to ease the paperwork burden on teachers.
"The average working week for a teacher is now 60 hours and that average includes the school holidays. So in term time teachers are working excessive hours," Dr Bousted told the BBC  ahead of the ATL conference in Liverpool.
"And the problem is so much of what they're doing isn't related to effective teaching and learning.
"It's just bureaucratic paper filling, data driven, mind-numbingly useless work they're doing for accountability purposes rather than raising standards of teaching and learning."
Dr Bousted urged the government to implement the findings of three reports on teacher workload in England which it published over the Easter weekend.
She warned: "If teachers have no time to relax, no time to recover from what is a very demanding job, then they are leaving the profession.
"Unless we do something about this workload problem then there aren't going to be teachers to teach children."
Education Secretary Nicky Morgan has accepted the findings of the three reports which urge reductions in the time teachers spend on marking, lesson planning and data collection.
Mrs Morgan said she agreed "nothing is more damaging to the profession than wasting the passion and expertise of teachers and school leaders on unnecessary tasks".
Her announcement, over Easter, came as the National Union of Teachers annual conference called for "sustained strike action" over workload.
A survey of 876 ATL members revealed the following views:
"The government needs to sit up and take responsibility for the recruitment crisis," said a primary teacher from Suffolk.
"Policies come in and then go out and we are left focusing on paperwork not the children," said an academy teacher from Wiltshire.
A London head of department said: "My partner is a solicitor in the City. I shouldn't feel like I have less free time than him, he is on three times my pay!"
Dr Bousted urged the government "to accept we are facing a crisis and put credible measures in place that will produce systemic change".
What was that article about?

A: Too much of teachers' time is taken up by "mind-numbingly useless" bureaucracy which saps staff morale and fuels the staffing crisis, says a union leader.

Problem: Chemotherapy and radiotherapy can kill tumours and the cells which make sperm.
A study, published in the journal Cell Stem Cell, extracted sperm-producing stem cells before cancer treatment and later placed them back into the monkey.
Sperm which could fertilise an egg were produced, which experts labelled a "milestone" in research.
Most men who have cancer treatment which could affect their fertility can choose to freeze sperm before their treatment starts. This is not an option for patients who have not yet gone through puberty.
BBC Health: Fertility guide
However, they do have the spermatogonial stem cells which would start to produce sperm in their teenage years.
The researchers at the University of Pittsburgh and the Magee-Womens Research Institute took samples of the stem cells from macaques and stored them in a freezer.
The monkeys were then given a chemotherapy drug.
Their own stem cells were implanted back where they came from after the course of chemotherapy had ended. Nine out of 12 adult monkeys and three out of five prepubescent monkeys were later able to produce sperm again.
Separate experiments showed eggs could be fertilised with sperm produced after the procedure.
Dr Kyle Orwig, from the department of obstetrics, gynaecology and reproductive medicine at Pitt School of Medicine, said: "This study demonstrates that spermatogonial stem cells from higher primates can be frozen and thawed without losing their activity, and that they can be transplanted to produce functional sperm that are able to fertilise eggs and give rise to early embryos."
He said there were still many challenges before this could be used in people: "Should we re-introduce the spermatogonial cells as soon as treatment is over, or wait until the patient is considered cured of his disease, or when he is ready to start a family? How do we eliminate the risk of cancer recurrence if we give back untreated cells that might include cancer cells?
"These are issues we still must work through, but this study does show us the concept is feasible."
Dr Allan Pacey, senior lecturer in andrology at the University of Sheffield, told the BBC that the idea had been discussed repeatedly but "experiments have never come close to suggesting it might work in humans".
However, he said: "This report is a very useful step forward and clearly shows that the science of spermatogonial stem cells transplantation might one day work for humans. And, although the authors report relatively low efficiency so far, in the context of someone who does not have any banked sperm to fall back on, these odds are probably very encouraging to make this kind of approach worthwhile."
He also highlighted safety concern saying: "It would be a disaster to give the cancer back to someone because cancer cells are lurking in the transplant.
"But also we need to make sure that the genetics of sperm produced from transplanted spermatogonial stem cells is correct and leads to the birth of healthy offspring which themselves give rise to healthy grandchildren and great grandchildren."
Pierre Fouchet, a researcher at the CEA Institute of Cellular and Molecular Radiobiology in France, said the results: "Constitute a milestone in the field of reproduction and generate hope for restoring fertility in survivors of childhood cancer."
However, he said advances in fertility research needed "intense debate" about the social consequences.
What was that article about?

A: Boys left infertile by childhood cancer treatment may one day be able to produce healthy sperm by using stored stem cells, monkey research suggests.

Problem: It said the dispute centred on the future of the company's drivers after plans were put forward to transfer 87 members to haulier Eddie Stobart.
Unite, which represents more than 700 Co-op drivers, said it had been given "a firm commitment for their future" in line with a five-year plan.
The Co-op said it was pleased with the ballot's outcome.
Unite said it recommended its members accept an offer following two days of talks at conciliation service Acas.
Members were based in Derbyshire, County Durham, Coventry, Essex, Devon, Scotland and Northern Ireland.
A "large number" voted in favour of the proposals, the union said.
Adrian Jones, from Unite, said: "We are confident that our members have a secure future with the Co-op and that our concerns about the future of in-house transport have been fully addressed."
Of the 87 affected drivers in Coventry, 67 took a severance package and 20 went to Eddie Stobart, the union said.
A Co-op spokesman said: "We have always maintained our commitment to retaining our in-house operations, and are glad that colleagues have recognised this."
What was that article about?

A:
Answer: Co-op drivers have voted to accept proposals to settle a dispute over outsourcing jobs, the Unite union says.