Edited sentence: "grandes écoles" , is a unique feudal, archaic and outdated french education system, a sort of a title of nobility( noblesse de diplome).A fresh graduate from these "grandes ecoles", is called ... "ingénieur principal" or .. senior engineer.All are still underdeveloped.In Tunisia, a former french colony, is following blindly the french education system, especially those called "grandes écoles".In a famous book "la mafia polytechnicienne" written by M.In fact a degree in math abstraction.It's a club membership.Kucsisco-Morizet, a "grande école/ polytechnique" graduate, the author wrote: "you may replace math by ancient greek, the result will be the same".Note: no single former french colony, following the french "grandes écoles", became industrialized.Strictly speaking it's not an engineering degree.no comment