Zambia's Grade 12 examination, administered by the Examinations Council of Zambia, is the country's secondary-leaving exam and the credential required for university admission and most formal employment. Its defining structural feature is the best-six calculation method — a candidate can enter up to eight or nine subjects from 33 options across seven groups, but the official School Certificate result automatically uses only their six highest-scoring subjects, always including compulsory English, regardless of how many total subjects they sat. This creates genuine strategic flexibility not found in most comparable African leaving exams: entering extra subjects functions as real insurance against one weak result, since anything beyond the counted best six simply doesn't affect the final outcome. Graded on a 1-to-9 scale (1 being Distinction), the exam requires passes in at least six subjects with specific credit thresholds to earn the full School Certificate, making a student's subject-entry strategy — not just raw subject-by-subject performance — a genuine factor in their eventual result.