AVO is an English Language School and an Authorised Cambridge English Language Assessment Centre (Cambridge English exams as well as CELTA and DELTA courses). Member school of EAQUALS - in 2007 the centre fulfilled all the criteria for quality of the Evaluation and Accreditation of Quality in Language Services Association, EAQUALS, and became the only fully accredited member school in Bulgaria. The school has also undergone thorough inspection of its testing and assessment procedures, and has gained the right to issue an EAQUALS certificate to its adult learners – a guarantee for the validity of the school teaching programmes and tests, and their relationship to the Common European Framework of Reference. AVO is a founder member of OPTIMA, the Bulgarian Association for Quality Language Services, whose main aim is to raise standards in the sector of Foreign Language Teaching throughout the country. The school is accredited by OPTIMA, and gains the right to use the association logo as a guarantee for quality and to issue a European Language Passport for students of the school.