Hundreds of schools are preparing to close in anticipation of a red weather warning for extreme heat scheduled for Wednesday. The upcoming heatwave is expected to push temperatures as high as 40C, potentially breaking UK temperature records. Some schools have shifted to online learning or shortened days to cope with the heat. National Rail has advised limited travel on Wednesday and Thursday due to severe disruptions. Parents facing unexpected school closures can take up to four weeks of unpaid parental leave annually. West Berkshire Council supports schools in prioritizing safety amidst challenging conditions. The Met Office projects temperatures nearing 39C, with high humidity intensifying the heatwave impact. School closures are also attributed to inadequate air conditioning, affecting indoor temperature regulation. Various councils across Wales have announced school closures due to the extreme heat. The hot weather is causing widespread disruptions, with numerous schools in Somerset, Buckinghamshire, and Gloucestershire partially or fully closed. Students at some schools are permitted to wear PE kits instead of full uniforms to stay comfortable in the heat. A red weather warning for extreme heat spans from London to Swansea, with temperatures nearing record highs. The impending heatwave is expected to surpass previous June temperature records. The Met Office has issued a red weather warning for extreme heat from Wednesday morning to Thursday evening. The forecast suggests temperatures approaching the UK’s all-time high of 40.3C recorded in July 2022.