Teachers, Principals and School Personnel - As enacted, requires the principal or the principal's designee provide notification to the parent or legal guardian of each student who was in the classroom or instructional area at the time that a classroom evacuation occurred by the end of the day in which the classroom evacuation occurred unless the event that prompted the classroom evacuation is an ongoing emergency or is otherwise under investigation by a state or local law enforcement agency, in which case the notification must not be provided to parents and legal guardians until the emergency event is resolved or the principal or the principal's designee determines that providing the notification does not impede an ongoing investigation, as applicable. - Amends TCA Title 49. Companion bill has been assigned Public Chapter Number 850 by the Secretary of State.