The multi-denom schools will be 'teaching atheism', they will be teaching about atheism. The following snip from the article was not included in the OP:
'This article was amended on 27 September 2013 to clarify that pupils in multi-denominational schools will learn about atheism as part of the wider curriculum covering ethics, beliefs and religion. Atheists will not be teaching children that God does not exist, as originally stated, rather, children will be educated about atheism, including the atheist belief that God does not exist.'
Boru
'This article was amended on 27 September 2013 to clarify that pupils in multi-denominational schools will learn about atheism as part of the wider curriculum covering ethics, beliefs and religion. Atheists will not be teaching children that God does not exist, as originally stated, rather, children will be educated about atheism, including the atheist belief that God does not exist.'
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax