Children at Tony Blair's city academies are not taught Creationism or forced to dress up as "McDonald's burgers", Education Secretary Alan Johnson has said.
Mr Johnson dismissed the "myths" which had built up around the academy scheme.
Visiting schools for the first time since being given his new job in the Prime Minister's reshuffle, he insisted the "cash for honours" row had not damaged the academies policy.
Mr Johnson said he could "understand" the concerns critics have over the scheme if they were based on "some of the myths that people come in and dress the kids up as McDonald's burgers or teach Creationism".
"That just cannot happen. These are schools who are teaching in accordance with the national curriculum."
Mixed exam results and several poor Ofsted reports have damaged the scheme's reputation and led one charity to advise potential sponsors to think again.
And police launched an investigation into claims that honours and peerages were offered to rich business figures in exchange for agreeing to sponsor academies.
Many Labour backbench MPs and teachers' unions are deeply sceptical about the involvement of private business figures in running academies.
The programme has also been hit by criticism that some schools are too strongly focused on Christian teaching.
The scheme was set up to transform education in England's poorest inner city areas.
