If they were to teach creationism, how exactly would the lessons go?

The science is the same. It is certainly possible to look at the evidence and come up with a different conclusion to the Darwin evolutionary position. Indeed, many would see that the evidence fits perfectly well with a design position so it would be a matter of just pointing that out. Why would anyone taking the naturalist position be afraid of that being pointed out? Wouldn't it be considered indoctrination just allowing one viewpoint to the exclusion of others?