disciplinal

from WordNet (r) 3.0 (2006)

disciplinal
    adj 1: designed to promote discipline; "the teacher's action was
           corrective rather than instructional"; "disciplinal
           measures"; "the mother was stern and disciplinary" [syn:
           {corrective}, {disciplinary}, {disciplinal}]

from The Collaborative International Dictionary of English v.0.48

Disciplinal \Dis"ci*plin*al\, a.
   Relating to discipline. --Latham.
   [1913 Webster]