The Collaborative International Dictionary of English v.0.48:

Reform \Re*form"\, n. [F. r['e]forme.]
   Amendment of what is defective, vicious, corrupt, or
   depraved; reformation; as, reform of elections; reform of
   government.
   [1913 Webster]

   Civil service reform. See under Civil.

   Reform acts (Eng. Politics), acts of Parliament passed in
      1832, 1867, 1884, 1885, extending and equalizing popular
      representation in Parliament.

   Reform school, a school established by a state or city
      government, for the confinement, instruction, and
      reformation of juvenile offenders, and of young persons of
      idle, vicious, and vagrant habits. [U. S.]
      [1913 Webster]

   Syn: Reformation; amendment; rectification; correction. See
        Reformation.
        [1913 Webster]

WordNet (r) 3.0 (2006):

reform school
    n 1: correctional institution for the detention and discipline
         and training of young or first offenders [syn:
         reformatory, reform school, training school]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "reform school":
   POW camp, bastille, black hole, borstal, borstal institution,
   borstal school, bridewell, brig, cell, concentration camp,
   condemned cell, death cell, death house, death row, detention camp,
   federal prison, forced-labor camp, gaol, guardhouse,
   house of correction, house of detention, industrial school,
   internment camp, jail, jailhouse, keep, labor camp, lockup,
   maximum-security prison, minimum-security prison, oubliette, pen,
   penal colony, penal institution, penal settlement, penitentiary,
   prison, prison camp, prisonhouse, reformatory, remand school,
   sponging house, state prison, stockade, the hole, tollbooth,
   training school