True science and the Bible do agree. The Bible does not anywhere prohibit people from making use of modern medicine. I am not sure exactly what blend of religious beliefs these people are following, but they are not basing what they do on the Bible. The way I see it, God works through doctors and medications many times to bring about healing. He is the one after all that designed our bodies and gave people the ability to develop medicines and medical techniques. We are responsible to use them for good. It is sad to think this boy may die because his parents do not see it that way.
As for homeschooling, it does matter tremendously what family you are talking about. In my experience, most families do a good job both academically and socially with their children when homeschooling. I know I have done just fine and I never "went" to school until college where I was on the Dean's List almost every semester and made lots of friends. (By the way, I went to college in WV while my parents were living in ID.)