UK primary class sizes among biggest in industrialised world, report finds

The OECD average primary school class size is 21, while in Luxembourg and Croatia it is just 15. Photograph: Joel Goodman/The Guardian

UK primary class sizes are among the biggest in the industrialised world, larger than Mexico, Turkey and Colombia, according to an international report.

The Organisation for Economic Co-operation and Development (OECD) study, which compares the state of education in about 50 countries, found primary school teachers in the UK face bumper classes of 27 children.