The development of the NCLEX involves several key steps: 1. Job Analysis: This is conducted to identify the tasks and responsibilities of entry-level nurses. 2. Test Plan: Based on the job analysis, the NCSBN creates a test plan that outlines the content areas and the percentage of questions allocated to each area. 3. Item Development: Nursing experts write and review questions, also known as items, to ensure they are clear, relevant, and accurate. 4. Pretesting: New items are pretested in actual exams to gather statistical data on their performance.