Tennessee Code Title 49. Education § 49-13-110

(a) An authorizer's approval of a public charter school application must be in the form of a written charter agreement signed by the sponsor and the authorizer, which shall be binding upon the governing body of the public charter school. The charter agreement for a public charter school must be in writing and must contain all material components of the approved application required under § 49-13-107(b).

(b) A charter agreement expires ten (10) academic years after the first day of instruction. A public charter school may delay, for a period not to exceed one (1) academic year, the school's initial opening. If the public charter school requires a delay in the school's initial opening of more than one (1) academic year, then the school must obtain approval of the delay from the school's authorizer.

(c) A renewal of a charter agreement shall be for a period of ten (10) academic years.

(d) The governing body of the public charter school may petition the authorizer to amend the original charter agreement. The state board of education shall determine the timelines for approval and the appeal process until 11:59 p.m. on June 30, 2021. Beginning July 1, 2021, the commission shall determine the timelines for approval and the appeal process. If the authorizer is the state board of education or the commission, then an appeal shall not be made of the state board of education's or the commission's decision to deny a petition to amend the charter agreement. The governing body of a public charter school may petition the authorizer for voluntary termination of the charter agreement before the charter agreement expires.

(e) If an LEA's local board of education changes the grade bands for the LEA's elementary schools, middle schools, elementary and secondary schools, or elementary or secondary schools, as those terms are defined in § 49-6-301, then the local board of education shall notify each public charter school authorized by the LEA at least one hundred twenty (120) days before the grade band changes are implemented to allow the public charter school to seek an amendment to the school's charter agreement.