In this subchapter:
Wis. Stat. § 121.51
The provision for the transportation, at public expense, of students to and from private schools on an attendance area basis is constitutional. Vanko v. Kahl, 52 Wis. 2d 206, 188 N.W.2d 460 (1971). For purposes of sub. (4) [now sub. (1)], and in the absence of fraud or collusion, when a religious school demonstrates by its corporate charter and bylaws that it is independent of, and unaffiliated with, a religious denomination, further inquiry by the state would violate Art. I, sec. 18. Holy Trinity Community School, Inc. v. Kahl, 82 Wis. 2d 139, 262 N.W.2d 210 (1978). As construed by the Wisconsin Supreme Court, sub. (1) is a facially neutral and generally applicable law that deprives all private schoolsreligious and secular alikeof receiving transportation funding already claimed by another school affiliated with the same group or organization. Therefore, the defendants did not violate the free exercise clause of the 1st amendment when they denied a Catholic private school's busing application in reliance on sub. (1) because another school shared its institutional affiliation and served the same catchment zone. St. Augustine School v. Evers, 906 F.3d 591 (2018). In applying the test of affiliation with a single sponsoring group under sub. (1), state officials must accept a religious organization's self-characterization. In this case, the defendants did not consider the private school's theology or religious practices in violation of the establishment clause of the 1st amendment. Rather, the defendants read and credited the school's statements on its website and busing request form that the school was a Catholic school. The defendants were not required to consider statements in the school's articles of incorporation and bylaws, which purportedly would have shown that the school's leadership disclaimed affiliation with the Catholic Church. St. Augustine School v. Evers, 906 F.3d 591 (2018). First amendment-based attacks on Wisconsin "attendance area" statutes. 1980 WLR 409.