There are two types of probation in California, informal (A.K.A. summary probation) and formal probation. California Informal (A.K.A Summary) Probation Adult informal probation means you are not supervised by the probation department. Instead, it means you are on informal probation to the court. Most people convicted of misdemeanors are placed on informal probation.   California Formal Probation Formal probation means you are under the supervision and direction of the probation department. Most people convicted of felonies are placed on formal probation.