California Juvenile Court System: Delinquency and Dependency

California's juvenile court system operates as a specialized division of the superior court, handling two distinct tracks — delinquency and dependency — that together affect tens of thousands of minors each year. Delinquency proceedings address youth accused of criminal conduct, while dependency proceedings address minors who have been abused, neglected, or abandoned. Understanding how these tracks function, where they overlap, and what governs each is essential to navigating the broader California legal system.

Definition and scope

California's juvenile court derives its authority from the Welfare and Institutions Code (WIC), the primary statutory framework governing minors in the state's legal system. Two distinct divisions of the WIC govern the two tracks:

• WIC § 300 (Dependency) — applies to minors who are abused, neglected, exploited, or at substantial risk of harm due to a parent's or guardian's conduct.
• WIC § 602 (Delinquency) — applies to minors who violate a federal or state criminal law or local ordinance.

A third category, WIC § 601, addresses "status offenders" — minors who engage in conduct that would not be criminal if committed by an adult, such as truancy or running away from home. These minors are labeled "persons in need of supervision" (PINS) in some jurisdictions; California designates them as subjects of a "601 petition."

Juvenile court operates within each county's superior court, governed procedurally by the California Rules of Court, Rules 5.500–5.840. The California Department of Social Services (CDSS) oversees child welfare services connected to dependency cases, while local probation departments administer delinquency supervision.

Key terminology used across both tracks is defined in resources such as the California court system's legal terminology reference, which clarifies distinctions between petition types, dispositions, and jurisdictional thresholds.

Scope and coverage limitations: This page covers California state juvenile court proceedings under the WIC. It does not address federal juvenile delinquency proceedings under 18 U.S.C. § 5031 et seq., tribal court jurisdiction over Native American youth (addressed separately in California Indigenous Tribal Law Intersections), or adult criminal prosecutions of minors tried "as adults" in superior court under Proposition 57 transfer rules. Immigration consequences of juvenile adjudications are also outside this page's scope; see California Immigration Law Intersection for that framework.

How it works

Delinquency track (WIC § 602)

The delinquency process follows a structured sequence:

1. Arrest or citation — Law enforcement contacts or detains a minor. Officers may release the minor to a parent, issue a citation, or refer the case to the probation department.
2. Probation intake — The probation officer evaluates whether to handle the matter informally (an "informal adjustment" under WIC § 654) or to refer to the district attorney for a formal petition.
3. Petition filing — The district attorney files a petition with the juvenile court alleging a specific violation under WIC § 602.
4. Detention hearing — Held within 72 hours of detention (excluding weekends and holidays) per WIC § 632, the court determines whether the minor remains detained.
5. Jurisdiction hearing — Equivalent to a trial; the court determines whether the allegations in the petition are true. There is no jury — a judge decides (California Rules of Court, Rule 5.780).
6. Disposition hearing — If jurisdiction is sustained, the court orders a disposition, which may include probation, placement in a group home, or commitment to the Division of Juvenile Justice (DJJ) under the California Department of Corrections and Rehabilitation.
7. Review hearings — Ongoing court oversight of the minor's compliance and progress.

Dependency track (WIC § 300)

1. Report and investigation — A mandated reporter or other party reports suspected abuse or neglect to the county child welfare agency. A social worker investigates within a timeframe set by case urgency (24 hours for emergency response).
2. Removal or voluntary services — The agency may remove the child on an emergency basis or offer voluntary family maintenance services.
3. Detention hearing — If the child is removed, a detention hearing occurs within 72 hours (WIC § 315).
4. Jurisdiction hearing — The court determines whether the allegations under WIC § 300 are supported by a preponderance of the evidence.
5. Disposition hearing — The court establishes a permanent plan: family maintenance, family reunification services, or a permanent plan such as adoption, guardianship, or long-term foster care.
6. Six-month and twelve-month review hearings — Mandatory reviews assess reunification progress. If reunification fails within statutory timelines (typically 12–18 months), a WIC § 366.26 "permanency planning hearing" is set.

The regulatory context governing these procedures — including federal Adoption and Safe Families Act (ASFA) timelines — is analyzed in the regulatory context overview.

Common scenarios

Scenario 1 — Dual-jurisdiction youth: A minor who is both a dependent child (under WIC § 300) and a delinquent (under WIC § 602) may be subject to "dual-jurisdiction" or "crossover youth" protocols. California AB 129 (2021) established a formal framework encouraging counties to manage these cases in a coordinated manner under a single case plan, reducing placement instability.

Scenario 2 — Informal diversion for first-time offenders: A minor cited for misdemeanor vandalism may be handled through a WIC § 654 informal program — typically 6 months of probation-supervised activities — without a petition being filed. Successful completion results in no formal adjudication.

Scenario 3 — Serious or violent felony and transfer to adult court: Under Proposition 57 (2016) and WIC § 707, a district attorney may request a "fitness hearing" to transfer a minor 14 years or older accused of certain serious felonies to adult superior court. The juvenile court judge evaluates five statutory criteria including criminal sophistication and prior delinquency history before granting a transfer.

Scenario 4 — Dependency and family reunification failure: A child removed at age 2 due to parental substance abuse remains in foster care. At the 18-month review, the court finds the parent has not complied with the case plan. A § 366.26 hearing is set; the court terminates parental rights and orders adoption as the permanent plan — the most common permanency outcome, according to CDSS Child Welfare Data.

Decision boundaries

Several threshold determinations govern which track applies, whether adult court becomes appropriate, and how competing interests are balanced.

Delinquency vs. dependency — distinct legal standards

Age jurisdiction

California juvenile court retains jurisdiction over minors under age 18 at the time of the alleged offense (delinquency) or at the time of the dependency petition. Under WIC § 607, the court may retain jurisdiction over a delinquent youth until age 25 for certain serious offenses committed prior to age 18, following 2021 statutory amendments expanding extended jurisdiction.

Transfer criteria (fitness hearing)

For serious or violent felony charges against a minor 14 or older, the court applies the 5-factor WIC § 707(a)(2) test:

1. Degree of criminal sophistication
2. Whether the minor can be rehabilitated before the expiration of juvenile court jurisdiction
3. Previous delinquency history
4. Success of previous attempts by the court to rehabilitate the minor
5. Circumstances and gravity of the offense

All five factors are weighed; no single factor is dispositive. This framework is examined further within the California criminal procedure overview.

Sealing and expungement

Juvenile delinquency records are not automatically public. Under WIC § 781, a person may petition to seal delinquency records after turning 18 (or after a waiting period post-jurisdiction), provided no disqualifying offenses — such as certain sex offenses requiring registration — are present. Dependency records are governed separately under WIC § 827, which restricts access to a defined list of authorized persons and entities. The distinction between these confidentiality regimes reflects the dual-purpose structure of the system explored across the California legal system homepage.

References

• California Welfare and Institutions Code (WIC) — California Legislature, official codification of juvenile court authority (§§ 300, 601, 602, 707, 781, 827)
• [California Rules of Court, Title 5 (