A juvenile committed to a juvenile training school is admitted to one type of training school - primary, middle, advanced or medical - according to his/her age, seriousness of crime prone tendency, and physical or mental disorder, etc., and follow a path for rehabilitation through correctional education there.
  The term to accommodate a juvenile committed to a juvenile training school is to be until when the juvenile becomes 20 years of age, in principle. However, if it is less than one year from the decision of commitment to the day when the juvenile becomes 20 years of age, the juvenile can be accommodated even after becoming 20 years of age only within one year from the decision. Furthermore, at the time of expiration of such a term, if an accommodated juvenile has a significant mental or physical disorder, or when it is considered inappropriate to discharge a juvenile whose criminal habit has not yet been corrected, a family court is to make a decision to extend the juvenile's accommodation upon a request from the director of a juvenile training school, by specifying a term not exceeding the day when he/she becomes 23 years of age. If an accommodated juvenile who reaches 23 years of age has a significant mental disorder and it is considered inappropriate to discharge him/her for the sake of public welfare, a family court is to make a decision to continue accommodating the juvenile in a medical juvenile training school upon a request from the director of a juvenile training school, by specifying a term not exceeding the day when he/she becomes 26 years of age.
  When an accommodated juvenile reaches the highest treatment grade and placing him/her under parole supervision is considered to be appropriate for his/her rehabilitation, or even though a juvenile does not reach the highest treatment grade, when his/her performance improves through hard efforts and placing him/her under parole supervision is considered to be especially necessary for his/her rehabilitation, the juvenile should be placed under parole supervision after being released on parole from the JTS based on a decision by the Regional Parole Board.

  In principle, a juvenile placed under probation by a family court's disposition comes under the supervision of a probation officer and a volunteer probation officer, and receives necessary guidance and support for his/her improvement and rehabilitation until he/she reaches 20 years of age. The probationary supervision may be suspended or measures such as early discharge from probationary supervision can be taken for a juvenile who is regarded to have rehabilitated himself/herself in consideration of the improvement of his/her behavior during the period.

  A juvenile committed to a support facility for development of self-sustaining capacity or a children's home is accommodated and treated by each of these facilities, which were established under the Child Welfare Act.