American Cultural Center is autorithed as a preparational center by Cambridge University. These exams are internationally recognized and are revised by Cambridge English Language Assesment. At the moment, they are the most requested titles by universities and work places at a national and international level.

Cambridge YLE is designed to get children of primary school age and older on the path to learning English. The YLE tests are broken down into three levels – Starters, Movers and Flyers – and are designed to make learning fun: Young Learners are encouraged by working towards certificates and earning the ‘shields’ that record their progress.
YLE: Starters
YLE: Movers
YLE: Flyers

The KET is an internationally recognised exam which tests your strengths and weaknesses in using English, recognizes the ability to work with everyday written and spoken English at a basic level. Level A2 in the Common European Framework of Reference.

Preliminary English Test (PET) is set at an intermediate level. It will demonstrate your competence in the use of English in real-life situations, as a student or in clerical and managerial jobs.
Cambridge PET is set at Level B1 of the Common European Framework.

First Certificate in English (FCE) is an upper-intermediate exam. It shows that you have good enough English to work in an English speaking environment or follow a foundation course or any other pathway into a university undergraduate degree.
Cambridge FCE is set at Level B2 of the Common European Framework.

Certificate in Advanced English (CAE) is a high-level qualification. You’ll need it if you plan to work in high-level professional and academic situations.
Cambridge CAE is set at level C1 of the Common European Framework.

Certificate of Proficiency in English (CPE) is Cambridge’s most advanced exam. Getting this qualification shows that your level of English language is extremely high. You would typically need a CPE if you’re working at a very senior level in international business settings or plan to study at postgraduate and doctoral level.
Cambridge CPE is set at level C2 of the Common European Framework.