Massachusetts Superior Court Rule 57:
Term of Probation
The term of probation, unless otherwise prescribed, shall be until the regular sitting for or including criminal business within the county appointed to begin next after the expiration of the following periods after the day on which the defendant is placed on probation namely: -- in cases under G.L. Chapter 273, five years and eleven months; and in other cases, eleven months. At the end of the term of probation, the probation officer shall make a written report to the court of the result of probation, which shall be filed in the case, and, if the court shall order, the probation officer shall bring the defendant before the court for an extension of probation or for other disposition.
(Applicable to criminal cases)