Researchers in the South West have suggested school summer holidays should be shortened, along with lengthening half-terms.
A report on tackling post-pandemic education inequalities, which forms part of a project funded by the Nuffield Foundation, said it was time to consider a reform to school calendars.
Experts in the report said reducing the six-week summer holiday to four weeks and introducing an extra week to half-term breaks could help tackle "educational divides" which have grown since the Covid-19 pandemic.
The Department for Education said the academic year was structured to provide plenty of time for holidays and schools had flexibility to plan term dates.