Wis. Stat. § 253.04: Private rights.

No official, agent or representative of the department may, under this section, enter any home over the objection of the owner or take charge of any child over the objection of the parent or of the person standing in the place of a parent or having custody of the child. Nothing in this section may be construed to limit the power of a parent, guardian or person standing in the place of a parent to determine what treatment or correction shall be provided for a child or the agency to be employed for that purpose.