I think if I were at any more parents evenings and found similar things in my ds's work books, that I'd have a word with the teacher there and then - maybe having taken my red pen with me and amended the learning objective to show that 'some evangelical Christians believe that...' or 'The story the bible has to explain how everything came to be before science was able to provide a much better explanation' or whatever fitted in to show that you were learning about what Christians believe(d) and that you were happy with.
Then take it to show the teacher, get her to ok it in an obviously 'I know kids get the wrong end of the stick sometimes' way and again watch what happens. It is a problem if your ds has ended up with a teacher with evangelical/creationist views even if the rest of the school is able to teach it properly - why should your ds's class not get the same quality of education as they deserve?
When my ds1 was in Foundation, one of his topics was space. His half term homework was to find 10 facts about space using parents to google or find relevant books etc. He was adamant that his teacher had said he had to go into deep space to do the research and was hugely upset and angry that I wouldn't take him into deep space on half term for a trip because he thought it would be lots of fun so he could do his homework...
Obviously in this case I knew the teacher had not said to do this - not least because humans haven't yet gone into deep space, let alone offering cheap and easy half term trips there. Even this was not seen as a good enough reason by ds for not going as he was adamant that his teacher had said he had to go and therefore he had to as everything she said was The Truth.
She was obviously more than happy to clear up the misunderstanding on his return to school - but particularly in the first couple of years at school, the teacher can be an incredibly important figure to a child and if they are using that position to deliberately tell them things like creationism as a fact then it's very insidious and more difficult to straighten things out easily, instead of them being a non-issue that should have never existed.