Tennessee Code Title 49. Education § 49-2-211

(1) Allow a parent or legal guardian access to review all surveys, analyses, or evaluations, prior to being administered to the parent or legal guardian's child; and

(2) Require the LEA to obtain the written, informed, and voluntarily signed consent of a student's parent or legal guardian, or the student if the student is eighteen (18) years of age or older, before the student participates in a survey, analysis, or evaluation. This subdivision (b)(2) does not apply if the full survey, analysis, or evaluation is related to classroom instruction of a curriculum and the survey, analysis, or evaluation is distributed to students as a method of evaluating the effectiveness of an instructional curriculum. A student's parent or legal guardian, or the student if the student is at least eighteen (18) years of age, may withdraw the parent's, legal guardian's, or student's consent at any time before the student participates in the survey, analysis, or evaluation.