Thank you for starting a debate on such an interesting topic. I personally think evolution should be taught in school. Even if the student does not agree with evolution, I think it is important they still understand what evolution is. This is so they can believe anything they want and they will have another theory to consider in their own faith.
The reason why evolution is not important enough that all schools are required to teach it is because evolution theory isn't something that can't be applied. Other sciences that are taught in schools such as chemistry and physics are being used everyday to advance technology to benefit mankind. In the field of biology, evolution is unnecessary for vaccines, medicines, and other innovations that come with the various fields of biology. Knowing how organisms arise do not contribute to these breakthroughs.
Dr. Phillip Skell writes, "It is our knowledge of how these organisms actually operate, not speculations about how they may have arisen millions of years ago, that is essential to doctors, veterinarians, farmers and other practitioners of biological science."
My question for Pro is what scientific advance requires the belief in microbes to microbiologist evolution?
Understanding how we may have evolved to become what we are now helps us understand natural selection in Science, and it can help us understand how our cells adapt and change. Learning about evolution also helps us understand how organisms today came to be what they are and how their features help them survive.
It seems that your arguments boils down is the reason why evolution is important to learn is to know how organisms change and adapt to their environment. This can be covered in natural selection and mutations. Although evolution is heavily reliant on natural selection and mutations, the same is not true vice versa. Both are observable and can be tested whereas microbes to man evolution is not observable. The big question that I would like pro to answer is "What technological breakthroughs requires the theory of evolution to be possible?" How can you make advances in science on something that can't be observed?
How can you make advances in anything based on history? Why is history a subject in school? What you are saying is that there is so connection between what happened years ago and what is happening currently. Even if there is no way to currently observe evolution, it is an important part of the science curriculum. Teachers also teach history, which cannot help us today. That does not mean it should not be understood.