Cal. Pen. Code § 1001.74
If it appears to the probation department that the divertee is performing unsatisfactorily in the assigned program, or that the divertee is not benefiting from education, treatment, or rehabilitation, or that the divertee is convicted of a misdemeanor in which force or violence was used, or if the divertee is convicted of a felony, after notice to the divertee, the court shall hold a hearing to determine whether the criminal proceedings should be reinstituted. If the court finds that the divertee is not performing satisfactorily in the assigned program, or that the divertee has been convicted of a crime as indicated above, the criminal case shall be referred back to the court for resumption of the criminal proceedings. If the divertee has performed satisfactorily during the period of diversion, the criminal charges shall be dismissed.
Ca. Pen. Code § 1001.74