Od školske 2012/2013 godine Avalon je test centar za polaganje i sticanje međunarodno priznatih diploma za engleski jezik (University of Michigan i HAUniv).

• BCCE – (B1 level) – Basic Communication Certificate in English; Hellenic American University, New Hampshire, USA
• ECCE – (B2 level) – Examination for the Certificate of Competency in English; University of Michigan, Michigan, USA
• ALCE – (C1 level) – Advanced Level Certificate in English; Hellenic American University, New Hampshire, USA
• ECPE – (C2 level) – Examination for the Certificate of Proficiency in English; University of Michigan, Michigan, USA