Mass. Gen. Laws ch. 211E, § 3
(a)
(3) The sentencing guidelines shall be based on reasonable offense characteristics, taking into account the nature and seriousness of each offense, and reasonable offender characteristics taking into account the offender's character, background, amenability to correction, and criminal history and the availability of the commonwealth's criminal justice and public safety resources.
(C) A target sentence for offenders for whom an intermediate sanction may not be appropriate based on a combination of reasonable offense and offender characteristics for each offense, and the adequacy of the commonwealth's criminal justice and public safety resources. The guidelines shall provide that, for each target sentence, the sentencing judge may impose a maximum sentence within a range to be established by the commission for each offense, and a minimum sentence of two-thirds of the maximum sentence; provided, however, that for target sentences of two years or greater the range may not be greater than twenty percent greater or less than the target sentence; and provided, further, that for target sentences of less than two years, the sentencing judge may impose an intermediate sanction. Within that range, the sentencing court may impose any sentence without stating its reasons therefor.
The commission shall act consistent with the need for flexibility, expeditious administration, case-flow management and resources of the trial court departments in sentencing guidelines.
For every criminal offense under the laws of the commonwealth, the guidelines shall establish:
(d) In establishing non-exclusive aggravating and mitigating circumstances pursuant to subparagraph (2) of paragraph (a), the commission shall determine whether the following kinds of factors, among others, are relevant, and shall take such factors into account only to the extent that it deems to be relevant:
(e) Except for the crimes set forth in section one of chapter two hundred and sixty-five, the sentencing judge may depart from the range established by the sentencing guidelines and impose a sentence below any mandatory minimum term prescribed by statute, if the judge sets forth in writing reasons for departing from that range on a sentencing statement as set forth in paragraph (h) of this section, based on a finding that there exists one or more mitigating circumstances that should result in a sentence different from the one otherwise prescribed by the guidelines and below any applicable mandatory minimum term.
The commission shall assure that the guidelines are neutral as to the race, sex, national origin, creed, religion and socio-economic status of offenders.