Tennessee Code Title 40. Criminal Procedure § 40-39-218

(a) The TBI shall classify a person who is required to register pursuant to this part with a qualifying conviction under § 40-39-202, or who is required to register pursuant to § 40-39-203(a)(2) as a sexual offender, violent sexual offender, or violent juvenile sexual offender, and whether an offender is an offender against children, as defined in § 40-39-202.

(b) The TBI may rely on investigative reports;  files of a United States attorney, district attorney general, or other prosecutorial entity;  court records;  or other credible information in classifying an offender under this section.

(c) The TBI shall notify the offender of the classification.