To be admitted to an RN certificate or diploma program, students might need to hold a license as a practical nurse. Once they've graduated, prospective RNs must earn state licensure, which requires passing the national examination for RNs. Curricula typically highlight human anatomy and physiology, as well as core topics like nursing fundamentals and medical-surgical nursing. To gain practice working as an RN, students supplement their classroom training with clinical opportunities, which are often required for graduation. High school diploma or equivalent is often needed for lengthier programs.