§ 21-13-309 — (b) Any district within the state may admit pupils resident in other districts of the state unless the admission overcrowds the classrooms of the admitting district. No district within the state shall be required to admit a pupil who has been suspended or expelled by the board of trustees or designated disciplinarian of any other district located in or outside the state. Except as provided under subsection (c) of this section, the district admitting a pupil under this subsection shall not assess tuition payments upon the district wherein the pupil resides, but shall include the pupil within its average daily membership (ADM) for purposes of determining its foundation program amount under W.S. 21-13-309

(c) Any district within the state may allow pupils
enrolled in another school district in the state to receive a
portion of a pupil's education pursuant to an agreement with the
district in which the pupil is enrolled. The agreement shall be
in writing with a copy kept on file by both districts. The
district providing for the enrollment of the pupil shall include
the pupil within its average daily membership (ADM) for purposes
of the foundation program under W.S. 21-13-309. The district
providing a portion of the pupil’s education may assess the
district providing for the enrollment of the pupil tuition for
the classes the pupil attends. The tuition shall be equal to or
less than the per ADM amount for the district providing a
portion of the pupil’s education prorated to reflect the number
of classes attended by the pupil.