16,600 European schools already hit by 30°C days — number may double by 2050

Around 16,600 European schools already experience at least one day per year with temperatures exceeding 30°C, and that number could double by 2050. High temperatures worsen classroom conditions and hinder pupils' ability to learn. Experts say school buildings must be adapted to a warmer climate, including measures to reduce heat build-up before air conditioning becomes necessary.