Ebony Rainford-Brent (R) at a 2009 Spirit of Cricket event
The Chance to Shine initiative is planning a crackdown on unfair play among school cricketers.
The Cricket Foundation and the MCC found 54% of children they surveyed had witnessed unfair play in every game.
But 67% say seeing a famous player do something unfair would not make them more likely to do it themselves.
Nearly half a million children aged eight to 14 in 4,000 schools in England and Wales will continue to receive free cricket coaching this summer.
Chance to Shine, a £50m national campaign launched by the Cricket Foundation in 2005, aims to "educate through cricket".
Former England and Worcestershire pro Graeme Hick, plus England women's star Ebony Rainford-Brent, were at a primary school in south-west London on Monday to drive home the "fair play" message.
Children at Chance to Shine schools will also get a chance to compete for MCC Spirit of Cricket Trophies as more focus is given to intra-school competition.
And, working through the county cricket boards, the Cricket Foundation and MCC will deliver 12 MCC Spirit of Cricket summer camps for children across five regions, the North, London, South West, Midlands and Wales.
Four of the camps will be girls-only and all will involve members of the World Cup-winning England women's cricket team.