Part 1 (AS) can be taken separately or with Part 2 (A2) to achieve an A level qualification. Candidates must complete the AS units and two additional A2 units, which contribute 50% of the total A level marks. The two A2 units are: MS3, a media investigation and research project worth 25% internally assessed; and MS4, a written exam assessing media texts, industry and audience worth 25% externally assessed.