Date of dataset: 6/30/2018
Source: PRISM (Probation Record Information System Management) PO-170 Report
Notes: To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population.
Number of records with ages withheld: 0

The Alameda County Probation Department (ACPD) collects information on all juveniles referred to the department and records this in PRISM (Probation Record Information System Management). Several reports are built into the PRISM system that allow ACPD staff to extract data for specified time periods. This dataset is derived from the PRISM PO-170 report – the Juvenile Detentions Data Extract. This report contains individual-level information for all youth detained on the date specified. To create this dataset, the report was de-identified and edited to include the most pertinent information.

Data Characteristics and Known Limitations.
• To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population. Please see the “Notes” tab in the public dataset file, which states the number of records with withheld ages in that dataset.
• This data contains all youth who were detained on the date specified. Many youth are booked into Juvenile Hall when arrested and subsequently released without ever spending a night in detention. These youth will be included in this dataset if they were detained at the time of the report, regardless of how long they stayed in Juvenile Hall.

Definition of Terms
• Age Group – age range the client was in on the date of report.
• Facility – the facility or type of detention the youth was in at the time of the report
o Juvenile Hall - youth that were booked into Juvenile Hall (the Alameda County Juvenile Justice Center) and had not been released as of the date of the report. Juvenile Hall houses youth pending Court proceedings while awaiting placement, youth who are ordered detained by the Court, youth who are under the jurisdiction of the Adult Court, and youth on courtesy holds for other jurisdictions.
o Camp Sweeney – youth housed in Camp Wilmont Sweeney on the date of the report. Camp Sweeney is a 24-hour local residential placement for court-ordered commitment male
youth, ages 15 to 18. The program offers treatment, rehabilitation, and education within a
structured living environment as a placement alternative to group homes and the State
Department of Juvenile Justice. CWS is an open setting and not secured by physical barriers.
Residents receive education, vocational training, counseling services, and cognitive
behavioral therapy. Cognitive Family home visits, family reunification, and reintegration into
the community are integral parts of the program.
o Home Supervision – youth under Home Supervision on the date of the report. Home
Supervision is a program offered as an alternative to detention. A minor placed on Home
Supervision by the Court or Probation Officer is required to sign a written promise (contract)
that he/she understands and will observe the specific conditions of the program. The
conditions may include curfew, school attendance, requirements related to the protection
of the minor, the person or property of another, or to the minor's appearance at Court
hearings.
o GPS Monitoring - youth on Global Positioning System monitoring devices on the date of the
report. Global Positioning System is a program offered as an alternative to detention. GPS
monitoring devices are used for minors released from Juvenile

Date of dataset: 12/31/2018
Source: PRISM (Probation Record Information System Management) PO-170 Report
Notes: To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population.
Number of records with ages withheld: 0

The Alameda County Probation Department (ACPD) collects information on all juveniles referred to the department and records this in PRISM (Probation Record Information System Management). Several reports are built into the PRISM system that allow ACPD staff to extract data for specified time periods. This dataset is derived from the PRISM PO-170 report – the Juvenile Detentions Data Extract. This report contains individual-level information for all youth detained on the date specified. To create this dataset, the report was de-identified and edited to include the most pertinent information.

Data Characteristics and Known Limitations.
• To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population. Please see the “Notes” tab in the public dataset file, which states the number of records with withheld ages in that dataset.
• This data contains all youth who were detained on the date specified. Many youth are booked into Juvenile Hall when arrested and subsequently released without ever spending a night in detention. These youth will be included in this dataset if they were detained at the time of the report, regardless of how long they stayed in Juvenile Hall.

Definition of Terms
• Age Group – age range the client was in on the date of report.
• Facility – the facility or type of detention the youth was in at the time of the report
o Juvenile Hall - youth that were booked into Juvenile Hall (the Alameda County Juvenile Justice Center) and had not been released as of the date of the report. Juvenile Hall houses youth pending Court proceedings while awaiting placement, youth who are ordered detained by the Court, youth who are under the jurisdiction of the Adult Court, and youth on courtesy holds for other jurisdictions.
o Camp Sweeney – youth housed in Camp Wilmont Sweeney on the date of the report. Camp Sweeney is a 24-hour local residential placement for court-ordered commitment male
youth, ages 15 to 18. The program offers treatment, rehabilitation, and education within a
structured living environment as a placement alternative to group homes and the State
Department of Juvenile Justice. CWS is an open setting and not secured by physical barriers.
Residents receive education, vocational training, counseling services, and cognitive
behavioral therapy. Cognitive Family home visits, family reunification, and reintegration into
the community are integral parts of the program.
o Home Supervision – youth under Home Supervision on the date of the report. Home
Supervision is a program offered as an alternative to detention. A minor placed on Home
Supervision by the Court or Probation Officer is required to sign a written promise (contract)
that he/she understands and will observe the specific conditions of the program. The
conditions may include curfew, school attendance, requirements related to the protection
of the minor, the person or property of another, or to the minor's appearance at Court
hearings.
o GPS Monitoring - youth on Global Positioning System monitoring devices on the date of the
report. Global Positioning System is a program offered as an alternative to detention. GPS
monitoring devices are used for minors released from Juvenil

Date of dataset: 6/30/2018
Source: PRISM (Probation Record Information System Management) PO-234 Report
Notes: To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population.
Number of records with ages withheld: 24

The Alameda County Probation Department (ACPD) collects information on all juveniles referred to the department and records this in PRISM (Probation Record Information System Management). Several reports are built into the PRISM system that allow ACPD staff to extract data for specified time periods. This dataset is derived from the PRISM PO-234 report. This report provides a dataset of all youth that have an assigned Probation Officer. Cases include formal supervision, informal supervision, intake, and investigations. The report provides a one-day snapshot of individual-level data on each youth along with demographic information. To create this dataset, the report was de-identified and edited to include the most pertinent information.

Data Characteristics and Known Limitations
• To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population. Please see the “Notes” tab in the public dataset file, which states the number of records with withheld ages in that dataset.
• PRISM is a referral system rather than a case management system, and a youth may have more than one open referral at a time. Therefore, the analyst who creates this report must apply a hierarchy to determine how to count youth with multiple open referrals, since PRISM does not perform this function. The hierarchy employed for this dataset is as follows: Warrant, Placement, Community Supervision, Intake / Investigations, Truancy.

Definition of Terms
• Age Group – age range the client was in on the date of report.
• Gender – gender of the client as recorded at booking.
• Race Group – race group of client as recorded at booking.
o Asian/Pacific Islander – a person whose ancestry can be identified as Asian Indian, Cambodian, Chinese, Filipino, Japanese, Korean, Laotian, Vietnamese, other Asian, Pacific Islander, Samoan, Guamanian, or Hawaiian.
o Black – a person whose ancestry is any of the black racial groups of Africa.
o Hispanic – a person of Mexico, Puerto Rico, Cuba, Central and South America or other
o Spanish culture or origin regardless of race.
o American Indian – a person whose ancestry is any Native American tribe.
o Other – a person who cannot be linked to any of the general or specific racial/ethnic groups
listed
o White – a person whose ancestry is any of the original peoples of Europe, North Africa, or
the Middle East.

Supervision Type – The type of supervision the youth was on at the time of the report
o Community Supervision – youth on formal supervision and placed in one of the
following units at the time of this report: General Supervision, Community Supervision,
Family Preservation Unit, or Intensive Supervision.
o Intake and Investigation – youth at the intake stage who have been arrested and/or
referred to Probation, as well as youth at the investigation stage who have referrals that
have been petitioned to court and are pre-adjudication at the time of this report. Youth
in the intake and investigation category are not yet on probation.
o Placement – youth placed outside of the home in foster care, a group home, or a
residential treatment center at the time of this report.
o Truancy – youth participating in the District Attorney’s Truancy Mediation Divers

Date of dataset: 3/31/2018
Source: PRISM (Probation Record Information System Management) PO-170 Report
Notes: To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population.
Number of records with ages withheld: 1

The Alameda County Probation Department (ACPD) collects information on all juveniles referred to the department and records this in PRISM (Probation Record Information System Management). Several reports are built into the PRISM system that allow ACPD staff to extract data for specified time periods. This dataset is derived from the PRISM PO-170 report – the Juvenile Detentions Data Extract. This report contains individual-level information for all youth detained on the date specified. To create this dataset, the report was de-identified and edited to include the most pertinent information.

Data Characteristics and Known Limitations.
• To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population. Please see the “Notes” tab in the public dataset file, which states the number of records with withheld ages in that dataset.
• This data contains all youth who were detained on the date specified. Many youth are booked into Juvenile Hall when arrested and subsequently released without ever spending a night in detention. These youth will be included in this dataset if they were detained at the time of the report, regardless of how long they stayed in Juvenile Hall.

Definition of Terms
• Age Group – age range the client was in on the date of report.
• Facility – the facility or type of detention the youth was in at the time of the report
o Juvenile Hall - youth that were booked into Juvenile Hall (the Alameda County Juvenile Justice Center) and had not been released as of the date of the report. Juvenile Hall houses youth pending Court proceedings while awaiting placement, youth who are ordered detained by the Court, youth who are under the jurisdiction of the Adult Court, and youth on courtesy holds for other jurisdictions.
o Camp Sweeney – youth housed in Camp Wilmont Sweeney on the date of the report. Camp Sweeney is a 24-hour local residential placement for court-ordered commitment male
youth, ages 15 to 18. The program offers treatment, rehabilitation, and education within a
structured living environment as a placement alternative to group homes and the State
Department of Juvenile Justice. CWS is an open setting and not secured by physical barriers.
Residents receive education, vocational training, counseling services, and cognitive
behavioral therapy. Cognitive Family home visits, family reunification, and reintegration into
the community are integral parts of the program.
o Home Supervision – youth under Home Supervision on the date of the report. Home
Supervision is a program offered as an alternative to detention. A minor placed on Home
Supervision by the Court or Probation Officer is required to sign a written promise (contract)
that he/she understands and will observe the specific conditions of the program. The
conditions may include curfew, school attendance, requirements related to the protection
of the minor, the person or property of another, or to the minor's appearance at Court
hearings.
o GPS Monitoring - youth on Global Positioning System monitoring devices on the date of the
report. Global Positioning System is a program offered as an alternative to detention. GPS
monitoring devices are used for minors released from Juvenile

Assessor's Office Secured Roll for 2016/2017. Secured Roll file with ownership names redacted: Assessed property values for the Alameda County residential and commercial properties as of July 1, 2016.

Parcel Boundaries in Alameda County. Last upload on 2/17/2016.

Assessor's Office Secured Roll for 2018/2019. Secured Roll file with ownership names redacted: Assessed property values for the Alameda County residential and commercial properties as of July 1, 2018.

Date of dataset: 12/27/2018
Source: PRISM (Probation Record Information System Management) PO-234 Report
Notes: To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population.
Number of records with ages withheld: 31

The Alameda County Probation Department (ACPD) collects information on all juveniles referred to the department and records this in PRISM (Probation Record Information System Management). Several reports are built into the PRISM system that allow ACPD staff to extract data for specified time periods. This dataset is derived from the PRISM PO-234 report. This report provides a dataset of all youth that have an assigned Probation Officer. Cases include formal supervision, informal supervision, intake, and investigations. The report provides a one-day snapshot of individual-level data on each youth along with demographic information. To create this dataset, the report was de-identified and edited to include the most pertinent information.

Data Characteristics and Known Limitations
• To ensure confidentiality and to protect the identities of individuals on probation, the ages of some individuals in the dataset have been withheld, and marked “N/A”. This is done to avoid possible re-identification through the available demographic information, or stigmatization of a group when they make a substantial percent of a designated population. Please see the “Notes” tab in the public dataset file, which states the number of records with withheld ages in that dataset.
• PRISM is a referral system rather than a case management system, and a youth may have more than one open referral at a time. Therefore, the analyst who creates this report must apply a hierarchy to determine how to count youth with multiple open referrals, since PRISM does not perform this function. The hierarchy employed for this dataset is as follows: Warrant, Placement, Community Supervision, Intake / Investigations, Truancy.

Definition of Terms
• Age Group – age range the client was in on the date of report.
• Gender – gender of the client as recorded at booking.
• Race Group – race group of client as recorded at booking.
o Asian/Pacific Islander – a person whose ancestry can be identified as Asian Indian, Cambodian, Chinese, Filipino, Japanese, Korean, Laotian, Vietnamese, other Asian, Pacific Islander, Samoan, Guamanian, or Hawaiian.
o Black – a person whose ancestry is any of the black racial groups of Africa.
o Hispanic – a person of Mexico, Puerto Rico, Cuba, Central and South America or other
o Spanish culture or origin regardless of race.
o American Indian – a person whose ancestry is any Native American tribe.
o Other – a person who cannot be linked to any of the general or specific racial/ethnic groups
listed
o White – a person whose ancestry is any of the original peoples of Europe, North Africa, or
the Middle East.

Supervision Type – The type of supervision the youth was on at the time of the report
o Community Supervision – youth on formal supervision and placed in one of the
following units at the time of this report: General Supervision, Community Supervision,
Family Preservation Unit, or Intensive Supervision.
o Intake and Investigation – youth at the intake stage who have been arrested and/or
referred to Probation, as well as youth at the investigation stage who have referrals that
have been petitioned to court and are pre-adjudication at the time of this report. Youth
in the intake and investigation category are not yet on probation.
o Placement – youth placed outside of the home in foster care, a group home, or a
residential treatment center at the time of this report.
o Truancy – youth participating in the District Attorney’s Truancy Mediation Diver