Security Threat Group (STG) Information

CDCR SHU Reforms

Effective security threat group (STG) management within CDCR prisons requires a comprehensive strategy that includes prevention, identification, interdiction and rehabilitation. CDCR recognized the need to evaluate its previous strategy and developed new approaches in response to evolving correctional practices.

The new strategy was piloted in October 2012. In October 2014, regulations formally incorporating the STG management program were adopted, making CDCR’s reforms permanent.

Since 2012, CDCR has implemented significant reforms to the way it manages STGs and validates inmates in the Security Housing Unit (SHU). CDCR has moved from an affiliation-based system to a behavior-based system; provided additional levels of due process in the validation and housing process; created a Step-Down Program; added rehabilitative programs, education and interdiction elements; standardized its policies and process; added safeguards to ensure efficient transition into and out of segregated housing; and increased training and guidance to staff.

CDCR’s reforms have lessened its reliance on segregated housing for managing validated inmates.

The Ashker v. Governor lawsuit was brought by 10 Pelican Bay State Prison SHU inmates. The suit alleged that long-term confinement in the SHU violated the Eighth Amendment’s prohibition of cruel and unusual punishment and that the process for reviewing the indeterminate SHU terms of gang-validated inmates violated the due process clause of the Fourteenth Amendment. The matter was originally filed in December 2009, amended in September 2012 to allege class claims and further amended in March 2015 to add another Eighth Amendment claim.

CDCR negotiated a final settlement agreement consistent with policy decisions already made by CDCR and its reforms implemented in 2012. Below are the documents filed with the court on September 1, 2015.


Title: Security Threat Groups
Section(s): 3000, 3023, 3043.4, 3044, 3077, 3139, 3269, 3269.1, 3314, 3315, 3321, 3323, 3334, 3335, 3341.5, 3375, 3375.2, 3375.3, 3376, 3376.1, 3377.2, 3378, 3378.1, 3378.2, 3378.3, 3378.4, 3378.5, 3378.6, 3378.7, 3378.8, 3504, 3505, 3545, 3561, 3651, 3721
Notification Date: January 31, 2014
Filed with Secretary of State: October 17, 2014
Permanent Adoption Date: October 17, 2014