Becoming a medical examiner will take a substantial amount of work and schooling. They need to have four years of college and a bachelor’s degree, along with requirements for medical school. During the medical schooling, they need to earn their MD or DO.They will need an additional four years of training in forensic pathology, as well as a year of residency, or a forensic pathology fellowship.hey need to have four years of college and a bachelor’s degree, along with requirements for medical school. During the medical schooling, they need to earn their MD or DO. They will need an additional four years of training in forensic pathology, as well as a year of residency, or a forensic pathology fellowship.