Tenn. Code Ann. § 49-6-2005: School flags

(a) The United States flag shall be displayed on every public school building. It is the duty of the board of education to purchase at wholesale prices, on competitive bids, as many flags as needed for the various schools and to pay for them out of the public school funds.

(b) In order that uniformity in the quality of flags and their adaptability to the size of the building may be secured, it is the duty of the commissioner of education to specify the size and quality of flags to be purchased and to outline rules and regulations for the proper care, display and observance of the flag.