Section 5(2AA)(a) of the Sentencing Act 1991 (Vic) does not prevent a court from considering a co-offender's non-parole period when assessing whether the parity principle has been infringed, because such consideration is not 'in sentencing an offender' but in evaluating whether equal justice has been achieved. This applies even where only one co-offender received a non-parole period. When applying the parity principle, a community correction order must be recognised as punitive for its entire term, and the total effective burden of a combination sentence (imprisonment plus CCO) must be compared with the co-offender's sentence.
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