S.D. Codified Laws § 13-53-52
A public institution of higher education, its faculty, administrators, and other employees, may not discriminate against any student or student organization based on the content or viewpoint of their expressive activity. Funds allocated to student organizations shall be distributed in a nondiscriminatory manner in accordance with applicable state and federal authority. Access to, and use of, facilities at a public institution of higher education shall be equally available to all student organizations, regardless of the ideological, political, or religious beliefs of the organization.
An institution may not prohibit an ideological, political, or religious student organization from requiring that its leaders or members of the organization affirm and adhere to the organization's sincerely held beliefs, comply with the organization's standards of conduct, or further the organization's mission or purpose, as defined by the organization.
SDCL 13-53-52