After completing a nursing degree, aspiring nurses must pass the National Council Licensure Examination (NCLEX) to obtain a nursing license. The NCLEX-RN is required for registered nurses (RNs), while the NCLEX-PN is for licensed practical nurses (LPNs) or licensed vocational nurses (LVNs). Each state has its own licensing board, and nurses must meet the requirements of the state where they wish to practice.