religious education in school and a widening of the subject to include "beliefs and values".
The report argues that assemblies should no longer be expected to have a "broadly Christian" character.
Mr Clarke says understanding other faiths builds more "tolerant" views.
The report, co-authored by Prof Linda Woodhead of Lancaster University, says the place of religion in schools in England and Wales is still shaped by legislation from the 1940s, despite "enormous change in the religious and cultural landscape".
"Our society has become massively more diverse," says Mr Clarke, a former Labour education secretary, in a report supported by the Economic and Social Research Council.
As well as those [...]