C2水平考试是由剑桥ESOL进行的一般英语语言能力考试。CPE资格证明您已精通英语。它证明您可以与一位精通英语的流利程度和成熟度进行沟通。通过考试意味着您具有在非常高级的专业或学术环境（例如，研究生课程或博士学位课程）中学习或工作所需的英语水平。与其他剑桥考试（例如B2 First和C1 Advanced）一样，该资格证书在欧洲国家得到雇主的广泛认可，并在亚洲和南美得到越来越多的认可。它并不是用来衡量英语进入英语大学和其他机构的英语能力的考试，但为此目的，通常接受一项剑桥考试的及格作为英语能力的证明。
The C2 Proficiency exam is a test of general English language ability run by Cambridge ESOL. A CPE qualification shows that you have mastered English to an exceptional level. It proves you can communicate with the fluency and sophistication of a highly competent English speaker. Passing the exam means you have the level of English that is required to study or work in a very senior professional or academic environment, for example on a postgraduate or PhD programme. As with other Cambridge exams such as the B2 First and C1 Advanced, the qualification is widely recognised in European countries by employers, and increasingly recognised in Asia and South America. It is not intended as a test that measures English ability for entry to English-speaking universities and other institutions, but a pass in one of the Cambridge exams is often accepted as evidence of English-language ability for this purpose.