No appeal or other action attacking the legality of the formation of a school district, either directly or indirectly, may be commenced after the school district has exercised the rights and privileges of a school district for a period of 90 days.
Wis. Stat. § 893.74
School district; contesting validity
1979 c. 323.
Official source: Wisconsin State Legislature. Reproduced from public-domain Wisconsin statutes; confirm against the official source for the current text. Not legal advice.