CELTA stands for Cambridge Certificate in English Language Teaching to Adults, which requires a relatively high level of language proficiency. buy a CAE CELTA Certificate, Generally, it requires native English speakers or individuals with a language level close to that of native English speakers. For those who want to engage in English teaching, having a CELTA certificate can better prove their professional abilities. The CELTA certificate belongs to the advanced category of the TESOL certification system, which is not only a teacher qualification certificate suitable for teaching adult English, but also a component of the UK Continuing Education Teaching Certificate and TESOL International