The bill amends Massachusetts General Laws, specifically Chapter 126, Section 40, to enhance the reporting requirements for jails and houses of correction, particularly focusing on the Plymouth correctional facility. It introduces a new section titled "Overview of Quarterly Population Report for the Individual Massachusetts Sheriffs' Offices," which requires sheriffs to compile and submit aggregate data on the inmate population quarterly. This data must include identifiers such as probation central file number, state identification number, race and ethnicity, and offense-based tracking number, while ensuring that no identifying information about individual inmates is included. The bill also establishes new definitions for critical data points and notes the limitations of the Sheriffs' Offices in reporting certain data that originates from the Trial Court.

Additionally, the bill mandates the collection of demographic data related to inmate admissions and releases, including race and ethnicity, as well as participation in various programs within the correctional facility. It aims to improve transparency and accountability in the correctional system by requiring detailed records of inmate demographics, program participation, and the length of stays. The bill emphasizes the need for standardized forms and procedures for reporting, ultimately creating a comprehensive database for analysis and policy-making. This systematic approach is intended to enhance the management of inmate services and outcomes, contributing to informed public policy decisions regarding criminal justice reform.