Registered nurses can join the work force after completing an Associate Degree in Nursing (ADN), a Bachelor’s Degree in Nursing or a diploma from an approved nursing institute. Courses taken by registered nurses include those in anatomy, microbiology, and physiology and other social or behavioral sciences. In addition to coursework, clinical experience is also a requirement for all registered nurse programs. Once the education requirements are complete, aspiring nurses must pass the NCLEX-RN exam administered by the National Council of State Boards of Nursing. Please note that even though you can enter the field of nursing with an Associate’s Degree in Nursing (ADN), most employers prefer to hire RNs with at least a Bachelor of Science in Nursing (BSN) degree.