A five-term year, which Newham has opted for, is popular with parents who dread summer holidays. But US and British educators also worry about "summer learning loss". Research suggests that maths performance and spelling are particularly badly affected by summer lay-offs, as are children with learning difficulties.
In America, two million children now have a year-round education that often follows a nine-weeks' school, three weeks' holiday pattern. That may not suit the British, but term-times have changed before - Kent holidays used to run from mid-August to early October to accommodate hop-pickers and acorn-harvesters - and they may change again. Teachers will want assurances on workloads. But that debate must wait. School is (almost) out, and some forecasters believe August will be glorious.