Juliet, held for the victims of a deadly shooting at the Covenant School in Nashville, Tennessee, U.S., March 28, 2023.
It will take place at a public park in the heart of Nashville, the Tennessee state capital.
The governor's wife Maria, substitute teacher Cynthia Peak and the head of the school Katherine Koonce previously taught together at another school, he said.
The assailant, Audrey Elizabeth Hale, 28, went to the Covenant School armed with two assault-style weapons and a handgun.
Monday's violence marked the 90th school shooting – defined as any incident in which a gun is discharged on school property – in the United States this year, according to the K-12 School Shooting Database, a website founded by researcher David Riedman.