Delivering education to pupils both remotely and in person poses a threat to teacher wellbeing, according to a new Ofsted report.
The document summarising the watchdog's research into remote education says that increasing workload is an ongoing challenge for schools in the pandemic.
It adds: "In particular, mixed delivery situations were seen as posing a threat to staff wellbeing. It was reported a number of times that staff were required to deliver content to students both in and outside of the classroom simultaneously."
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The report says that without "an appropriate blended learning model, this was regarded as a particularly challenging situation".
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This Ofsted finding comes in a section of a new report highlighting what leaders in the sector, subject experts, schools, parents and teachers have told the watchdog about the challenges they have experienced in moving to remote education.
Ofsted published findings from its research today as it is set to resume monitoring inspections.
These will be done remotely until the half-term break next month for some schools rated as "requires improvement" or "inadequate".
In updated guidance published last week, the inspectorate said that its virtual monitoring inspections could include inspectors sitting in on remote live lessons.