Texas teacher reportedly plays ringing noise to discipline students

NEVADA, Texas (KXAN) — A north Texas school district said it's investigating one of its teachers after it was reported the teacher used a ringing noise to discipline her students.
Affiliate NBC5 in Dallas-Fort Worth reported on Friday it was a teacher at Edge Middle School in the Community Independent School District, which is a little less than an hour northeast of Dallas.
A student told NBC5 the teacher "put on the ringing noise; everyone was covering their ears." She said one student wa