There are three levels N4 to N6. Each N-Level takes six months. To be admitted into N4 level, Grade 12 (Matric) or equivalent is a requirement. One can proceed to the next level only when the previous level has been successfully completed. On successful completion of each level the candidate will be issued with a National Certificate by the Department of Higher Education & Training (DHET). If you complete all three National Levels (approximately 12 subjects), as well as 18 months of practical experience in the area of study work situation, the N6 National Certificate can be converted to a National Diploma.