Evolution accepted by the Roman Catholic Church since 1996...

Evolution is the only scientifically acceptable explanation to date that takes into account all verifiable empirical evidence. Intelligent design does not, pure and simple. Take a look at Wikipedia's article or the words from JPII himself.

But what about those who say that it is just a theory? Well, so is the theory of gravity, but you do not see anyone disputing that in the classroom or anywhere else.