The severity of the offense. A serious crime is more likely to result in the filing of a petition than a less serious crime. The minor's age. Petitions are more likely to be filed in cases involving older children. The minor's past record.
Formal charges are more likely when a minor has been previously involved with juvenile court.
The strength of the evidence that the minor committed a crime. Obviously, stronger evidence leads to a greater likelihood of formal charges. The minor's gender. Formal charges are more likely to be filed against boys than against girls. The minor's social history.