S.D. Codified Laws § 10-4-13.2
If any property owned by an educational institution is used partly by such institution for purposes that are exempt under § 10-4-13 and partly for purposes that are not exempt under § 10-4-13, the portion of the property that is used for purposes that are not exempt shall be taxed as other property of the same class is taxed.
The appraised value of the entire property utilized by educational institutions operated for profit shall be multiplied by the percentage of the entire property used for other than student housing, student and administrative parking, and instructional or administrative purposes. The resulting value shall be multiplied by the percentage of time such property is used for other than student housing, student and administrative parking, and instructional or administrative purposes. The resulting value shall be the assessed value for taxation purposes.
SDCL 10-4-13.2