Wis. Stat. § 767.13: Impoundment of record.

Except as provided in s. 767.127 (3), the record or evidence in an action affecting the family may not be impounded, and access to the record or evidence may not be refused, except by written order of the court for good cause shown. No person may permit a copy of any impounded record or evidence, or the substance of the record or evidence, to be taken by any person other than a party to the action or his or her attorney of record, unless a court orders otherwise.