Education - As introduced, enacts the "Tennessee School Safety Act of 2026"; requires a student who has been expelled on two or more separate occasions for the zero tolerance offense of threatening mass violence on school property or at a school-related activity to submit to a psychiatric examination conducted by a medical professional; prohibits the student from returning to school or a school-related activity until the medical professional finds that the student is no longer a threat to the school and can safely return to school. - Amends TCA Section 39-13-813 and Title 49, Chapter 6.