Two-fifths of teachers in the next five years due to "out of control" workload pressures and "excessive" accountability, according to a country's largest teaching union.
40% who took part in the survey.
Ministers wants to find out more about a potential exodus among recently trained teachers after the National Education Union (NEW) found that more than a quarter (26%) of those with less than five years' experience plan to quit by 2024.
Of those with less than two years' experience, whose careers have barely begun, the figure was still 15%. When asked the reasons why they planned to leave, respondents blamed workload (62%) and the accountability regime (40%), amid complaints about the pressures of Ofsted inspections and school performance tables.
"My job is no longer about children," one respondent said. "It's just a 60-hour week with pressure to push children's achievement data through."
Many of those who took part in the survey, which self-selecting, have provided their accounts. "Working 70 hours a week for many years. I'm getting out before the job kills me, "said one.
"My personal life does not exist anymore, "said another.
In addition to working part-time, I have come to the conclusion that I am a student in education.
The education secretary, Damian Hinds, announced plans in January to try to ease workload and help more people to share their jobs.
The NEW joint general secretary Kevin Courtney accused the government of doing little more than "fiddling at the edges" in his attempts to address teacher workload. "As long as the main drivers of a performance-based system are still in place, schools want to continue on the grip of a culture of fear, over-regulation, and a lack of trust," he said.
If we are to stop the haemorrhaging of good teachers from the profession. "
The NEW, which is holding its annual conference in Liverpool, is due to discuss workload, excessive working hours and bullying on Tuesday, with calls for the union to set aside a budget to take cases of workload breaches to tribunal and a national day of action to publicize the effect on children's education.
One of the conference delegates, Henry Emoni, a maths teacher from Canvey Island, Essex who has been teaching for six years, said he had grown up with less than 10 pupils, fewer support staff, and less experienced volunteers colleagues to offer support.
Of the 30 colleagues are trained in the UK. He said some had been learning abroad, but others were teaching abroad in Dubai and the United Arab Emirates. "I think about leaving on a daily basis. I would like to learn from more experienced teachers, but there's no one around.
The poll of 8,600 teachers, school leaders and support staff found that 56% felt their work-life balance was over 30% who said it was unchanged and 12% who saw improvements. Worst affected were senior leaders, heads of department and middle leaders, 66% of whom complained their work-life balance had deteriorated.
Responding to the survey, a Department of Education spokesperson said: "We have worked with school leaders and teachers to create a workload reduction toolkit, which provides practical advice and resources that schools can use rather than create new ones from scratch.
"We are also tackling excessive data burdens in schools, simplifying the accountability system to target.
Responses were dominated by calls for a reduction in workload, with widespread complaints about heavy marking and over-assessment.
One respondent said: "Less assessment for pupils; It creates too much pressure on pupils and creates too much for teaching, which would be much more beneficial for pupils. "
"Trust being given back to the teachers," said another. "Less paper pushing and more focus on the children. Less emphasis on SAT results. "