Parents, students and leaders express concerns at Metro Nashville Public Schools' board meeting just six days after a deadly school shooting.

The board discussed how their decision to pilot the weapon detection system, Evolv, was not taken lightly. The board acknowledged the many concerns and limitations of using them.

After a deadly shooting rocked the community and halted classes at Antioch High School for nearly a week, the return of students Tuesday started and ended the same way — with protest.