Rethinking class size: a complex story of impact on teaching and learning: by Peter Blatchford and Anthony Russell, London, UCL Press, 2020, 323 pp., £45 (Hardback), ISBN-10: 178735881X, £25 (Softback), ISBN-13: 978-1787358812, (free to download through this UCL Press link: uclpress.co.uk/size). Issue 4 (19th May 2021) - Brundrett, Mark