You are true when you speak regarding to the curent Greece's situation.
The ATPL theory at Egnatia Aviation is conducted in English, and the chief ground instructor is english if I am not wrong.
Now, I was looking at Egnatia to convert my future FAA licences, but due to the current crisis in Greece, I am looking to convert my licences, study ATPL theory, do a MCC course and become a flight insturctor in Spain.