One can study biology without studying evolution, but it is like learning chemistry without learning about atoms and molecules or studying English without the vowels. Science fiction has no business being mixed in with real science in our public school classrooms. Students can study cells and learn how the various parts interact with one another. They can see that mutations are almost always harmful. And those that aren't harmful result in the loss of information from the DNA, not an increase.
Evolution is a belief with no solid scientific evidence to support it.
Not only is it unnecessary to the study of biology, it has no business being included in the curriculum to begin with. It evolution were to be taught in the public schools, it should be in a class on mythology. Most Christian denominations such as the Catholic and Methodist churches, accept the reality of evolution. See 50 surveys on creationism for the truth about this. It is past time to put evolution back in the science classroom.