Kouris graduated from the Varvakeio high school and has degrees in mineralogical engineering from the National Technical University of Athens and in economics from the Athens University of Economics and Business.
Yannakakis was born in Athens, Greece in 1953 and attended Varvakeio High School for his early education.
Notable alumni: Alexandros Papadiamantιs, Evangelos Averoff, Fredy Germanos, Georgios Drosinis, Alexandros Papagos, Antonis Samarakis, Konstantinos Tsatsos, Leonidas Kouris, Mihalis Yannakakis.