IFF Creationism could be presented as genuine science, I would agree to having it presented as such...but by the looks of these threads, that's going to be darned difficult to do. Until and unless Creationism applies the scientific method, I think it's better off left to parents, or simply presented as a novel idea outside testable (or verifiable) science.
BTW, I have NO doubt that parents who strenuously disagree with the theory of evolution, supplement their children's education at home. Thus, I'm not really certain what their complaint is. Parents can say whatever they like to their children, and in the circles I traveled in as a child and adolescent, I often heard parents tell their children to "give the teacher what he/she wanted" on exams, but that they "knew the real truth" from their parents and their churches.
Always discussing a straw man, never discussing the real challenge to evolution - Intelligent Design. Intelligent Design is certainly testable. It is testable now. In fact Behe's famous example of the bacterial flagellum has indeed been tested. Nowadays we are able through genetic manipulation to 'knock out' individual genes. This has been done with the bacterial flagellum and as Behe has claimed, it will not operate if you 'knock out' any of some 40 genes.