DJJ Research and Statistics

The Juvenile Research Branch (JRB) generates a variety of reports and statistical information through its research program. If you have questions about the kinds of information we make readily available, we urge you to carefully read through the following information before e-mailing a question or mailing a research request. Thank you for your interest in JRB.

The JRB carries out the DJJ's research program using the following functions:

• The youth information function; the JRB manages the Division’s Offender-based Information and Tracking System, develops projections for the Division’s facility and parole populations, publishes reports on the DJJ's youthful offender population, and provides statistical information in response to requests from inside and outside the Division.
  
• The research and evaluation function; the JRB carries out short-term and long-term process and impact evaluations of the Division's rehabilitative programs, conducts research projects to enhance the classification of offenders according to their treatment needs and risks, conducts research designed to assess the Division's facility program needs, and provides research-based information to DJJ administrators, staff, and others outside the Division.

The JRB provides information in three broad areas:

• Facility and parole population characteristics
• Population projections
• Research and evaluation reports

If you are interested in conducting research involving DJJ programs, click here. 

Related Links

Facility and Parole Population Characteristics

The JRB compiles and publishes extensive data on characteristics of the facility and parole populations. These reports include information on population composition and characteristics, summaries of population movements, and projected changes in the size of populations under DJJ jurisdiction. Some of these reports can be viewed and downloaded from this website through the links below. Others may be available in paper form by contacting the JRB at (916) 262-1485.

Population Overviews

2012
2011
2010
2009
2008
2007
2006
2005
2004
2003

Characteristics Reports

December 2012
June 2012
December 2011
June 2011
December 2010
June 2010
December 2009
June 2009
December 2008
June 2008
December 2007
June 2007
December 2006
June 2006
December 2005
June 2005
December 2004
June 2004
December 2003
June 2003

Monthly Facility Population Table

April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
Highest Facility Population 1995-1996

Facility and Parole Movement Reports

Facility
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
Fiscal Year 2009-10
Fiscal Year 2010-11

Living Unit Breakdown
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010

Parole
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
Fiscal Year 2009-10
Fiscal Year 2010-11

Average Daily Population

Monthly Table
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009

Fiscal Year Table
2011-12
2010-11
2009-10
2008-09

Monthly Trends

December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
Feburary 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010

Time Add/Cut Reports

Monthly Statistical Reports:
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
Feburary 2012
January 2012

Monthly Table
March 2011
February 2011
January 2011 - Modified Version as of May 2011
December 2010 - Modified Version as of May 2011
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010

Calendar Year
2009

Fiscal Year Table

Population Movement Summaries

Monthly Reports
March 2011
February 2011
January 2011
Monthly Population Movement Summaries 2010
Monthly Population Movement Summaries 2009
Monthly Population Movement Summaries 2008
Monthly Population Movement Summaries 2007
Monthly Population Movement Summaries 2006
Monthly Population Movement Summaries 2005

Calendar Year
2007
2006
2005
2004

Fiscal Year
2007-08
2006-07
2005-06
2004-05

First Commitment Rate Reports

Calendar Year 2011
Calendar Year 2010
Calendar Year 2009
Calendar Year 2008
Calendar Year 2007
Calendar Year 2006
Calendar Year 2005
Calendar Year 2004
Calendar Year 2003
Calendar Year 2002
Calendar Year 2001

First Commitment Reports

First Commitment Characteristics: Calendar Year 2009
First Commitment Characteristics: Calendar Year 2008
First Commitment Characteristics: Calendar Year 2007
First Commitment Characteristics: Calendar Year 2006
First Commitment Characteristics: Calendar Year 2005
First Commitment Characteristics: Calendar Year 2004
A Comparison of First Commitment Characteristics: 1996-2007
A Comparison of First Commitment Characteristics: 1995-2006
A Comparison of First Commitment Characteristics: 1994-2005
A Comparison of First Commitment Characteristics: 1993-2004
Characteristics of First Admissions:  1959-2001

A Comparison of the Division of Juvenile Justice's Facility and Parole Populations

1999-2008
1998-2007
1997-2006
1996-2005
1995-2004
1994-2003
1993-2002

Length of Stay of Division of Juvenile Justice Youth

2010
2009
2008
2007
2006
2005
2004
2003
2002

Initial Appearance Hearings

Initial Appearance Hearings 2009
Initial Appearance Hearings 2008
Initial Appearance Hearings 2007
Initial Appearance Hearings 2006
Initial Appearance Hearings 2005
Initial Appearance Hearings 2004

DJJ Population Projections

The JRB generates estimates of facility and parole populations for five years into the future. The DJJ population projections are developed semi-annually and are used in the development of the Division's budget and Population Management and Facilities Master Plan. The current population projections and Facilities Master Plan are available through the links below.

Spring 2013 Population Projections for Fiscal Years 2012-13 through 2016-17
Fall 2012 Population Projections for Fiscal Years 2012-13 through 2016-17
Spring 2012 Population Projections for Fiscal Years 2011-12 through 2015-16
Fall 2011 Population Projections for Fiscal Years 2011-12 through 2015-16
Spring 2011 Population Projections for Fiscal Years 2010-11 through 2014-15
Fall 2010 Population Projections for Fiscal Years 2010-11 through 2014-15
Spring 2010 Population Projections for Fiscal Years 2009-10 through 2013-14
Fall 2009 Population Projections for Fiscal Years 2009-10 through 2013-14
Spring 2009 Population Projections for Fiscal Years 2008-09 through 2012-13
Fall 2008 Population Projections for Fiscal Years 2008-09 through 2012-13
Spring 2008 Population Projections for Fiscal Years 2007-08 through 2011-12
Fall 2007 Population Projections for Fiscal Years 2007-08 through 2011-12
Spring 2007 Population Projections for Fiscal Years 2006-07 through 2010-11
Fall 2006 Population Projections for Fiscal Years 2006-07 through 2010-11
Spring 2006 Population Projections for Fiscal Years 2005-06 through 2009-10
Fall 2005 Population Projections for Fiscal Years 2005-06 through 2009-10
Spring 2005 Population Projections for Fiscal Years 2004-05 through 2008-09
Fall 2004 Population Projections for Fiscal Years 2004-05 through 2008-09
Spring 2004 Population Projections for Fiscal Years 2003-04 through 2007-08
Population Management and Facilities Master Plan

Research and Evaluation Reports

The JRB publishes reports on research and evaluation projects it conducts as well as for contracted studies. These reports include process and impact evaluations of the Division’s rehabilitative programs, treatment needs assessments, need and risk classification development, and operational research.

Research Reports and Publications

The JRB conducts research on parole programs, develops projections for the Division's facility and parole populations, and other specified research projects on youths.

In addition, the JRB carries out short-term and long-term process and impact evaluations of the DJJ’s rehabilitative programs, conducts research designed to assess the DJJ’s facility needs, and provides technical assistance and resources for special projections. For your convenience, here's a directory of our most recent reports (some require Adobe Acrobat Reader 2.1+; you can download it for free):

Current:
Dialectical Behavior Therapy: Evidence for Implementation in Juvenile Correctional Settings
Juvenile Justice Data Project Summary Report Documents
Recidivism of DJJ Youth, 2004/05

Archive:
Annotated Bibliography -- Delinquency Prevention
   - Evaluation Studies
   - Descriptive & Predictive Studies
   - Miscellaneous Articles

Process Evaluation of the DJJ Residential Substance Abuse (RSAT) Program
   - Executive Report
   - Full Report

Drug Testing for Youthful Offenders on Parole

Identifying Mental Health Treatment Needs Among Serious Institutionalized Delinquents using Paper-and-Pencil Screening Instruments: Final Report to the National Institute of Justice. Rudy Haapanen and Hans Steiner (Stanford University) - July 2003

Stanford Report of DJJ's Mental Health System
Hans Steiner, M.D. - Dec. 31, 2001

Treatment Needs Assessment (TNA) Report - March 1998

Mental Health and Substance Abuse Treatment Needs Assessment: Description and Preliminary Findings - August 2000

Dewitt Nelson 120-Day Drug Program for Parole Violators, Program Description (First Twelve Months)--November 2004

Population Management and Facilities Master Plan - June 2000

Related Links

If the data provided in the reports above do not meet all of your information needs, try searching the following links to other sources of information on juvenile justice statistics and information.

California Department of Justice
Governor's Office of Criminal Justice Planning
Office of Juvenile Justice and Delinquency Prevention
National Criminal Justice Reference Service
National Clearinghouse for Criminal Justice Information Systems
Justice Research and Statistics Association
UCLA Center for Health Policy Research

If you are still unable to find the information you need after searching these websites, you may contact JRB staff for further assistance in your information search.

Requests for Additional Data

The JRB currently gathers and distributes extensive statistical data on DJJ youths and parolees. These data are published and regularly available in a number of reports. The JRB staff also provides information in response to direct requests for data not included in published reports. These requests are considered on a case-by-case basis, and not all such requests can be accommodated. For further information about additional data that the JRB may be able to provide, please contact the Office of Research at (916) 323-2919.