South Dakota Codified Laws
Chapter 18C - Procurement By Local Government Units
Section 5-18C-1 - Contract for transportation of students.

5-18C-1. Contract for transportation of students.
No contract for the transportation of students may exceed five years. Specific provisions of the contract may be renegotiated during the term of the contract if guidelines for making changes are in the contract. Any change made during the term of the contract shall be reported in the school board minutes.

Source: SL 2010, ch 31, ยง85.