This question is based on a misunderstanding. Marshfield High School is a public secondary school; it does not provide medical services, including heart surgery. Heart surgery is performed by specialized medical professionals in hospitals and medical centers. A high school would not have the facilities, equipment, or trained personnel to conduct such procedures.
There is no cost associated with heart surgery from Marshfield High School because they do not offer such services. The cost of heart surgery is highly variable and depends on the specific procedure, the hospital, the surgeon's fees, and insurance coverage. To find out about the cost of heart surgery, you would need to contact hospitals and cardiothoracic surgery centers directly and inquire about their pricing and insurance policies.