In South Africa, matric final marks (Grade 12 National Senior Certificate results) are calculated by combining School-Based Assessment (SBA) marks with final exam marks. Here’s a breakdown of the calculation process:

1. School-Based Assessment (SBA) – 25%

• The SBA mark is based on assessments completed during the school year, including tests, projects, assignments, and practical work.
• The SBA accounts for 25% of the final mark for most subjects, except for Life Orientation, where it makes up 100% of the final mark (as there is no final exam for this subject).

2. Final Exam – 75%

• The final exam in each subject, taken at the end of the year, counts for 75% of the final mark in most subjects.
• For subjects that involve practical exams (like Visual Arts or Computer Applications Technology), the final mark may include a practical exam component in addition to the written exam.

3. Calculation of the Final Mark

• For most subjects, the final mark is calculated by combining 25% of the SBA mark and 75% of the final exam mark.
• For example, if a student scores 60% in SBA and 80% in the final exam, the calculation would look like this:

  $Final Mark=(SBA\times 0.25)+(Exam\times 0.75)$Final Mark=(SBA×0.25)+(Exam×0.75)$Final Mark=(60\times 0.25)+(80\times 0.75)=15+60=75\mathrm{\%}$Final Mark=(60×0.25)+(80×0.75)=15+60=75%

4. Life Orientation Exception

• Life Orientation is assessed solely through SBA, so the final mark is the SBA mark alone, contributing 100% of the score.

This weighted calculation approach ensures that both continuous assessment and end-of-year performance are reflected in the final matric results.