NCCER develops standardized construction and maintenance curriculum and assessments with portable credentials. These credentials are tracked through NCCER's Registry System that allows organizations to track the qualifications of their craft professionals and/or check the qualifications of possible new hires. To be an approved instructor and both teach and certify students, you must successfully complete this three-day teacher training offered by an NCCER Certified Master Trainer. In order to go through the training, you must hold the appropriate Master Craftsman Credentials. Craft Instructors must meet the following qualifications: 1. Experience at a minimum journey or technician level in their area of expertise OR 2. A minimum of three years of experience as a certified teacher in a vocational/technical construction or maintenance-related training program.