Tennessee Code Title 36. Domestic Relations § 36-6-407

(a) The court shall approve agreements of the parties allocating parenting responsibilities, or specifying rules, if it finds that:

(b) The court may consider a parent's refusal, without just cause, to attend a court-ordered parental educational seminar in making an award of sole decision-making authority to the other parent. The court shall order sole decision making to one (1) parent when it finds that:

(c) Except as provided in subsections (a) and (b), the court shall consider the following criteria in allocating decision-making authority:

(d) When determining whether an agreement allocating parenting responsibilities is in the best interest of the child pursuant to subdivision (a)(3), the court may consider any evidence submitted by a guardian ad litem appointed for the child, if one has been appointed by the court, subject to the Tennessee Rules of the Supreme Court relative to guidelines for guardians ad litem appointed for minor children in divorce proceedings and the Tennessee Rules of Evidence.

(e) Notwithstanding any provision to the contrary, the requirements of subsection (a) and Rule 52.01 of the Tennessee Rules of Civil Procedure are conclusively satisfied upon the court's approval of the parties' agreement allocating parenting responsibilities, or specifying rules, and written findings of fact and conclusions of law by the court are not required.