A four-year program offered at colleges and universities that prepares nurses to practice across all health care settings. BSN graduates have the greatest opportunity for advancement. For instance, a BSN is required for entry into a Master's program, which may in turn lead to a career in management, or on to more specialized nursing positions such as clinical nurse specialist, nurse practitioner, nurse educator, or nurse researcher. A BSN is preferred and often required for military nursing, case management, public health nursing, overseas/development nursing, forensic nursing and school nursing. Some countries (the European Union, Australia, and New Zealand) require a BSN before being able to sit for the RN exam.