The Court of Appeal for Saskatchewan made the order in a decision, released Tuesday, that reviewed the 2013 conviction and sentencing of Leroux.
Leroux's sentence has been increased from three years to eight. He was given two days, from the May 4 decision date, to turn himself in. Leroux was granted parole after serving one year of the initial three-year sentence. That sentence was given after RCMP charged Leroux in 2011, following a lengthy investigation.
The appeal court noted that Leroux had regularly and repeatedly abused boys as young as nine years old. According to the decision, Leroux would give the youngsters mixed drinks, including martinis, before assaulting them. In some cases the assaults took place in his quarters at the school. Sometimes the boys were assaulted in their bunks.
Leroux had previously been convicted, and sentenced to 10 years in prison, for sexual assaults that took place at another residential school, Grollier Hall in Inuvik, from 1968 to 1979. That case went through the courts in the 1990s.
In the Saskatchewan case, the appeal court found that one of the ten convictions, relating to a total of eight victims, had to be quashed because the judge mistakenly mixed up the facts.
Leroux, now 74, represented himself on the appeal.