Nashville remains on edge in the aftermath of the Antioch High School shooting last month. Why it matters: School safety is dominating conversations at kitchen tables and in the mayor's office following the city's second school shooting in less than two years.

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

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.

Nashville police and schools are monitoring social media discussion and concerns Thursday as people speculate if additional schools could be targeted after a 17-year-old student opened fire Wednesday at Antioch High School, killing himself and a 16-year-old girl while injuring another, officials said.

The Metro Nashville Police Department opted to permanently add a third school resource officer to Antioch High School as students return Tuesday.

Two local students were arrested in unrelated cases for making school threats Thursday. In the first case, Dorrian Harp, an 18-year-old student at Hunters Lane High School, allegedly admitted to telling another student in his class on Tuesday that he would shoot up the school the next day.

Threats against schools and institutions are taken very seriously by the MNPD. Those responsible, once identified, will be prosecuted.”

School threats are on the rise after a Jan. 22 shooting left two dead, including the shooter, and one injured at Antioch High School. It's been a little more than a week since 16-year-old Josselin Corea Escalante was killed and a 17-year-old classmate was injured after another 17-year-old boy opened fire and later shot himself in the school cafeteria,