Talkin - according to gov.uk national curriculum info:
They (schools) must also provide religious education (RE) and sex education at Key Stage 4. Pupils don?t have to take exams in religious studies but schools must provide at least 1 course where pupils can get a recognised RE qualification at Key Stage 4 and above.
and:
Schools have to teach RE but parents can withdraw their children for all or part of the lessons. Pupils can choose to withdraw themselves once they?re 18.
so according to that, its compulsory at ks4 unless you've opted your DD out. I don't quite understand what it means about the 1 course where pupils can get a recognised qualification - afaik although they do a little bit of re in my dds school (mixed in with the pshe/citizenship/other miscellaneous non-exam stuff) I wasn't aware of any sort of qualification associated with it. (they can of course opt to do GCSE RE - my avowedly atheist DD had that down as her reserve option as she quite enjoyed it in yr9 as it was debate and ethics and not just learning myths)
rabbit: 'r e teaching should be learning about faith and non-faith positions, learning about and from, not about promoting a particular view. there are so many different views and most groups are sure they are 'right'. keep r e, keep it open and tolerant, give it some status and back it up with funding for research and training.'
That seems to be pretty much what happens already. I don't get what this petition is asking for that isn't already there in schools which follow the national curriculum/SACRE.