As pupils across the UK prepare to return to school in early September, teachers and education leaders are once again asking the same question: how hot is too hot to teach?
The debate comes after another summer of record-breaking temperatures, with June 2026 becoming the hottest June on record as temperatures reached 37.7°C. According to estimates, around 2,700 people died during May and June in England and Wales as extreme heat gripped the country.
