N.C. Gen. Stat. § 115C-89
At the next meeting of the Board after the reports have been filed, the Textbook Commission and the Board shall jointly examine the reports. From the books evaluated the Board shall select those that it thinks will meet the teaching requirements of the State public schools in the instructional levels for which they are offered. The Board shall request sealed bids from the publishers on all the books being considered.
The Board shall make all necessary rules and regulations concerning requests for bids, notification to publishers of calls for adoption, execution and delivery of contracts, requirement of performance bonds, cancellation clauses, and such other material matters as may affect the validity of the contracts.
N.C. Gen. Stat. § 115C-89