Yours, Etc.: Origins and Uses of 8 Sign-Offs
mid-15c., "bring up (children), train," from Latin educatus, past participle of educare "bring up, rear, educate," which is related to educere "bring out, lead forth," from ex- "out" (see ex-) + ducere "to lead" (see duke (n.)). Meaning "provide schooling" is first attested 1580s. Related: Educated; educating.