Source : Webster's Revised Unabridged Dictionary (1913)

Educative \Ed"u*ca*tive\ (?; 135), a. [Cf. F. ['e]ducatif.]
   Tending to educate; that gives education; as, an educative
   process; an educative experience.

Source : WordNet®

educative
     adj : resulting in education; "an educative experience"