The Collaborative International Dictionary of English v.0.48:

Educational \Ed`u*ca"tion*al\, a.
   Of or pertaining to education. "His educational
   establishment." --J. H. Newman.
   [1913 Webster]

WordNet (r) 3.0 (2006):

educational
    adj 1: relating to the process of education; "educational
           psychology"
    2: providing knowledge; "an educational film"

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "educational":
   academic, advisory, autodidactic, coeducational, communicative,
   cultural, didactic, disciplinary, edifying, educating, educative,
   enlightening, exhortatory, eye-opening, homiletic, hortatory,
   illuminating, informational, informative, informing, initiatory,
   instructive, introductory, lecturing, monitory, pedagogical,
   preaching, preceptive, propaedeutic, revelatory, scholastic,
   self-teaching, teaching, tuitionary