Tennessee Code Title 49. Education § 49-1-601

(a) A student who has not attended the same high school within an LEA for at least sixty (60) school days of the most recent school year of enrollment and who has exited high school without a regular high school diploma and without transferring to another high school that grants a regular diploma may, for the purpose of calculating graduation rate, be assigned to the high school at which the student was enrolled for the greatest proportion of school days while enrolled in grades nine through twelve (9-12) pursuant to procedures developed by the department.

(b) Students that earn an alternate academic diploma pursuant to § 49-6-6001, shall be included in the four-year adjusted cohort graduation rate pursuant to procedures developed by the department.