Wis. Stat. § 118.167: Private school determination by state superintendent.

If an association that regulates or accredits private educational institutions in this state submits an affidavit to the state superintendent attesting that the institution meets or exceeds all of the criteria under s. 118.165 and the state superintendent finds that the institution does meet or exceed all of the criteria under s. 118.165, the state superintendent shall determine that the institution is a private school. If at any time the state superintendent finds that an institution determined to be a private school under this section no longer meets the criteria under s. 118.165, the state superintendent may withdraw the determination.