"The National Curriculum science is the only compulsory part ofsex and relationships in education in schools and must teach children about how their bodies work to prepare them for growing up and to protect them from harm, " it says.
In a statement, Mr Knight said parents did not have the right to withdraw their children from the statutory sex and education part ofthecurriculum, only the optional PHSE element.
Tory MP David Burrowes asked whether parents would be able to take their children out of RE, sexeducation and other classes in thecurriculum where pupils were "taught about the value of same-sex marriage".