*There were no "institutions of higher learning" until the 4th century. For specialist learning (say medicine) an "expert" was engaged. (There were ''sophists'', itinerant teachers who went from city to city teaching certain specialist subjects and cost an arm and a leg.) A formal system of secondary education didn't appear until Hellenist times. | *There were no "institutions of higher learning" until the 4th century. For specialist learning (say medicine) an "expert" was engaged. (There were ''sophists'', itinerant teachers who went from city to city teaching certain specialist subjects and cost an arm and a leg.) A formal system of secondary education didn't appear until Hellenist times. |