Teachers, Principals and School Personnel - As enacted, specifies that a teacher or other employee of a public school or LEA is not required to refer to a student using the student's preferred pronoun if the pronoun is not consistent with the student's biological sex; insulates a teacher or other employee of a public school or LEA from civil liability and adverse employment action for referring to a student using the pronoun that is consistent with the student's biological sex. - Amends TCA Title 49, Chapter 6.