Tennessee Code Title 49. Education § 49-6-2004

(a) The custody of all county school property shall be with the county board of education.

(b) The board may designate the principal teacher of the local school, during the school term, or the truancy officer, to look after the protection and preservation of school grounds, houses and equipment. The board may appoint a capable person other than the attendance officer as custodian to take care of such school property during the year or the vacation period; provided, that the person shall not be employed unless the county legislative body first approves the expenditure of money for that purpose.