105 ILCS 5/15-10: Value fixed-Certification of plat-Plat and certificate to govern.

After the school lands have been subdivided and platted, the trustees of schools or township land commissioners shall fix the value of each lot and certify to the correctness of the plat, stating in the certificate the value of each lot and describing it so that it may be identified. The plat and certificate shall be delivered to the county superintendent and shall govern him in advertising and selling such lands.