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 mandates that sheriffs compile and submit a quarterly report detailing various data points for each individual committed to their facilities. This includes information such as probation central file numbers, state identification numbers, race and ethnicity, offense-based tracking numbers, and program participation outcomes. The reports must be submitted to key public safety officials and will not contain any identifying information about individual inmates.

Additionally, the bill includes a "Data Definitions & Disclaimer" section that clarifies the definitions of critical data points like the Probation Central File (PCF) Number, State Identification Number (SID), and Offense-Based Tracking Number (OBTN). It also notes that certain required data points, such as case disposition and bail amounts, are not maintained by the Sheriffs' Offices and are instead sourced from the Trial Court. The Massachusetts Sheriffs Association is working with the Trial Court and the Executive Office of Public Safety and Security to refine these metrics for future reporting.