If you are a grown adult, and you choose to pray to your God to heal you if you have an illness, than fine. Do as you see fit. But if you have a child, who is a minor -- and legally unable to make their own decisions on behalf of themeselves, you have no business putting your own personal and religious beliefs in front of the well being of your child.
In the news, we have the story about young Madeleine Neumann. A young diabetic girl who was clearly going into a shock of some sort that was killing her, and yet her parents chose to not have her see a doctor -- but to pray for her healing instead. And they "believed she would recover". The girls' immediate family (e.g. aunts, etc) and other friends had been trying to convince the parents to take her to a doctor for over a week --with no success. They called 911, from their own homes - as well as the family's home for the paramedics to come in and take over but at that point it was too late. This to me, is just inexcusable.
As a parent you have to put your own wants, needs and desires aside for the well being of your children. This includes your own personal belief in your God. While you may have the faith that God will heal -- do not deprive your children of the necessities of life needed, most especially if there is a medical situation involved!
God will not educate your child, do not deprive them of school. God will not feed your child; do not deprive them of food. God will not clothe your child -- please don't let your child walk around without clothes on their back. God will not provide a roof over your head -- please ensure that you are able to sustain safety and shelter for your child. And most of all, God will not heal your sick child; do not let your child die because of your blind faith. Your child has blind faith in YOU, to be their protector and their shepherd. They do not understand the ramificiation or politics of religion and what God can or can not do based upon a particular school of thought.
While we all teach our children points of views on what we believe -- do not sacrifice your own child's well being based upon your own selfish ideaology. And I'm sorry, I find it selfish to deprive a child of medical necessities and the right to live -- and then hide behind religion in justifying the reason.