pedagogue (n.)

late 14c., "schoolmaster, teacher," from Old French pedagoge "teacher of children" (14c.), from Latin paedagogus, from Greek paidagogos "slave who escorts boys to school and generally supervises them," later "a teacher," from pais (genitive paidos) "child" (see pedo-) + agogos "leader," from agein "to lead" (from PIE root *ag- "to drive, draw out or forth, move"). Hostile implications in the word are from at least the time of Pepys (1650s). Related: Pedagogal.