National Corrections Reporting Program, 2007

The National Corrections Reporting Program gathers data on prisoners entering and leaving the custody or supervision of state and federal authorities. The dataset is comprised of four types of data: prisoners who were admitted to prison (Part 1), released from prison (Part 2), released from parole (Part 3), or in prison at year end (Part 4). The National Prison Statistics (NPS) program was established in 1926 by the Bureau of the Census in response to a congressional mandate to compile national information on the populations confined in correctional institutions. This program described the characteristics and counts of prison inmates during each calendar year. Since its initiation, responsibility for this program has shifted among several agencies -- in 1950 it was transferred to the Federal Bureau of Prisons and to the Law Enforcement Assistance Administration in 1971. Since 1972, the Bureau of Census, under agreement with the Department of Justice, has had responsibility for compiling the statistical data. Census staff negotiates directly with each state, assembles and edits the data, and prepares the data for analysis and publication.

国家惩教报告计划（National Corrections Reporting Program）负责收集州级与联邦当局羁押、监管下的囚犯收押与离所相关数据。该数据集包含四类统计内容：收押入狱囚犯（部分1）、刑满释放囚犯（部分2）、假释解除囚犯（部分3），以及年末仍在押囚犯（部分4）。
国家监狱统计计划（National Prison Statistics, NPS）由美国人口普查局于1926年设立，以响应国会关于编制惩教机构羁押人员全国统计信息的授权要求。该计划旨在统计每一日历年度内监狱在押人员的数量与个体特征。自计划启动以来，其负责主体历经多次更迭：1950年移交至联邦监狱管理局，1971年转至执法援助管理局。1972年起，人口普查局依据与司法部达成的协议，承担起该统计数据的编制工作。普查局工作人员将直接与各州对接，完成数据的收集、编辑，并为后续的分析与发布做好数据准备。