The six victims have been named as Evelyn Dieckhaus, Hallie Scruggs, and William Kinney, all aged nine, 61-year-olds Cynthia Peak and Mike Hill, and 60-year-old Katherine Koonce.
Pictures have so far been released of Mr Hill, Ms Koonce, Ms Peak and nine-year-old Hallie.
Hallie was the daughter of the pastor whose church runs the school.
The three adults were all staff, Ms Koonce was the headteacher, Ms Peak a substitute teacher and Mr Hill was a caretaker.
“We love the Scruggs family and mourn with them over their precious daughter Hallie,” Park Cities Presbyterian Church senior pastor Mark Davis said in a statement.
“Together, we trust in the power of Christ to draw near and give us the comfort and hope we desperately need.”
Advertisement
The Covenant School in Nashville has about 200 students from preschool through sixth grade, as well as roughly 50 staff members.
Hale had a manifesto and detailed maps of the school, and entered the building by shooting through its doors and starting on a killing spree.
Police chief John Drake said: “We have a manifesto. We have some writings that we’re going over that pertain to this day, the actual incident. We have a map drawn out about how this was all going to take place.”
Please use Chrome browser for a more accessible video player
2:54
Nashville shooting: Police kill school attacker
Officers started receiving reports of an attack at 10.13am (4.13pm UK time) and as police began clearing the ground floor of the school they heard gunfire coming from the second floor.
Two officers from a five-member team opened fire in response and fatally shot the suspect at 10.27am (4.27pm).