Might you possibly be either premed or pre-vet? If so, can your parents cover the cost of 4 years of undergraduate education out of state with no debt and also cover the cost of medical or veterinary school without your taking on even as much as 1/2 of the cost of medical or veterinary school as debt?
500 hours of volunteering in a hospital is quite good for someone who is currently a senior in high school if you are thinking of premed as a possible option.