Wis. Stat. § 116.055: Real property.

The board of control may purchase, hold, encumber and dispose of real property, in the name of the agency, for use as its office or for any educational service provided by the agency if a resolution to do so is adopted by a two-thirds vote of the members of the board of control and then approved by three-fourths of the school boards in the agency by majority vote of each school board. Aid received under s. 116.08 may be used for the acquisition and maintenance of real property under this section.