Children at three private schools in Manchester have been taught from American textbooks which state that abortion is wrong, evolution is a lie and homosexuals choose to be gay.
Three private schools in Ancoats, Moston and Ardwick use the Tennessee-based Accelerated Christian Education (ACE) curriculum.
The Manchester Evening News said the textbooks also state "God wants wives to submit to their husbands" and tells children they can avoid Aids by practising the Bible.
The news follows the UK government banning the teaching of creationism as science in all existing and future academies and free schools.
The government released a new set of funding agreements in a little noticed document last week, including clauses which specifically prohibit pseudoscience.
But school leaders and Christian Education Europe (CEE) - which provides the curriculum to schools on the continent - say the literature at the Manchester schools is only a "tool" in a wider education.
“As Christians we believe the Bible and we believe what the Bible says, and it does say a number of those things, but we are not single-issue people and we teach our students to think for themselves and realise there are a vast number of issues," Headteacher Brenda Lewis, who established the ACE King of Kings School, told The Manchester Evening News.
Dr Greg Hibbins, general manager of Christian Education Europe, said: “The users of our curriculum are independent and have the choice to adapt and manage the content as they choose.”
The comments came as it emerged how schools will be ordered to "promote British values" in response to the Trojan Horse affair.
A new document sets out a written definition for the first time of what exactly Education Secretary Michael Gove is saying must be promoted by schools, in response to the "Trojan horse" allegations that academies in Birmingham were under the influence of Muslim extremists.
It stipulates that the education secretary can close a school or dismiss a governor if he or she is "unsuitable" due to conduct "aimed at undermining the fundamental British values of democracy, the rule of law, individual liberty and mutual respect and tolerance of those with different faiths and beliefs".
The Muslim Council of Britain (MCB) has raised fears that the reforms, which will apply to new academies and free schools, could prevent people with conservative Muslim beliefs viewed as incompatible with "British values" being involved - a claim the Department for Education denies.