C2 Proficiency, formerly known as Cambridge English: Proficiency (CPE), is Cambridge's highest English qualification – proof that you are a highly competent speaker of English. A C2 Proficiency qualification shows that you can:
study demanding subjects at the highest level, including postgraduate and PhD programmes; negotiate and persuade effectively at senior management level in international business settings; understand the main ideas of complex pieces of writing; talk about complex or sensitive issues and deal confidently with difficult questions.