Wis. Stat. § 115.82: Admission and transportation of nonresidents.

(1) A cooperative educational service agency, county children with disabilities education board or school district that provides special education and related services shall admit a nonresident if the program is appropriate for the child’s disability. Refusal to admit a child does not relieve the local educational agency that is responsible for providing a free, appropriate public education to the child under this subchapter from that responsibility.

(2) In addition to the requirements of s. 121.54 (3), when board and lodging are not furnished to a nonresident child with a disability, the school district in which the child resides shall provide transportation, except as follows:

(a) If there is a plan of transportation under s. 115.817 (8), the county children with disabilities education board shall provide transportation.

(b) If the child is attending a public school in a nonresident school district under s. 118.51 or 121.84 (1) (a) or (4), the nonresident school district shall provide transportation.

(c) If the child is attending a public school in a nonresident school district under s. 118.50, the school district specified to do so in the whole grade sharing agreement shall provide transportation.