Tennessee Code Title 49. Education § 49-6-2907

(a) LEAs and school administrators may not prohibit personnel from participating in religious activities on school grounds that are initiated by students at reasonable times before or after the instructional day so long as such activities are voluntary for all parties and do not conflict with the responsibilities or assignments of such personnel.

(b) Nothing in this section shall prohibit LEAs and school administrators from allowing personnel to participate in other constitutionally permissible religious activities on school grounds.