The bill amends Massachusetts General Laws, specifically Chapter 126, Section 40, to enhance the reporting requirements for sheriffs regarding the population of jails and houses of correction. It introduces a new section titled "Overview of Quarterly Population Report for the Individual Massachusetts Sheriffs' Offices," which requires sheriffs to compile and submit quarterly reports detailing various data points for each individual committed to their facilities, including probation central file numbers, state identification numbers, race and ethnicity, and offense-based tracking numbers. Additionally, the bill includes a "Data Definitions" section to clarify terminology used in the reports and notes that certain data points, such as case disposition and bail amounts, are managed by the Trial Court rather than the Sheriffs' Offices.

Furthermore, the bill proposes amendments to improve the management and reporting of inmate data within the Middlesex County jail system, emphasizing the collection of demographic information to address disparities in the criminal justice system. It mandates the inclusion of specific identifiers for inmates, such as booking and release dates, length of sentences, and earned time credits, to enhance transparency and accountability. The proposed changes aim to streamline the tracking of admissions and releases, improve data accuracy, and facilitate better analysis of trends related to incarceration and rehabilitation efforts, ultimately promoting equitable treatment of all individuals in custody.