Schools which do not offer pupils the chance to play competitive sport "cement the social inequality that holds our nation back", the head of Ofsted has said.
Sir Michael Wilshaw, who is due to present a report into sports teaching in state and private schools at the Festival of Education at Wellington College, said:
Heads who treat competitive sport with suspicion or as an optional extra are not only denying youngsters the clear dividends that come with encouraging them to compete, they are also cementing the social inequality that holds our nation back.
More state schools are now encouraging sporting excellence.
They use competitive schools sport to energise the entire school culture.
They demonstrate that high school fees and large playing fields are not a pre-requisite to success.
More top news
A construction worker was crushed when a platform collapsed on them while the set was being dismantled.
Nasa's Juno spacecraft will get closer to the giant planet than any other spacecraft before.
Theresa May may be able to trigger withdrawal from the European Union without parliamentary approval.