Students in Uvalde, Texas, returned to school Tuesday, three months after a mass shooting took the lives of 19 students and two teachers.

But survivors will never return to the building where the massacre took place. Robb Elementary School will be demolished, Uvalde's mayor said.

It's not clear when the school will be razed and whether it will be replaced with another school or a memorial or other building.

In the meantime, students will attend classes at other schools in the district. Some families who still don't feel comfortable returning are transferring to other districts or opting for online classes.

Students arrive at Uvalde Elementary, which was protected by a fence and Texas state troopers on Tuesday.
Students arrive at Uvalde Elementary, which was protected by a fence and Texas state troopers on Tuesday.
Eric Gay/AP
A student interacts with a comfort dog. Ten teams of comfort dogs from 11 states and their handlers will be on eight campuses in the district over the next three weeks.
A student interacts with a comfort dog. Ten teams of comfort dogs from 11 states and their handlers will be on eight campuses in the district over the next three weeks.
Uvalde CISD
A student gets off a bus at Uvalde Elementary.
A student gets off a bus at Uvalde Elementary.
Eric Gay/AP
Workers at Uvalde Elementary greet students on Tuesday.
Workers at Uvalde Elementary greet students on Tuesday.
Nuri Vallbona/Reuters
A teacher sits with children on the first day of school.
A teacher sits with children on the first day of school.
Uvalde School District
The back of a worker's shirt reads "together we rise & together we are better."
The back of a worker's shirt reads "together we rise & together we are better."
Nuri Vallbona/Reuters
Students during class on their first day back. Stuffed animals with notes of encouragement <a href="index.php?page=&url=https%3A%2F%2Fwww.cbsnews.com%2Fdfw%2Fnews%2Fella-klimowicz-uvalde-stuffed-animals%2F" target="_blank" target="_blank">were organized by a survivor</a> of last year's <a href="index.php?page=&url=https%3A%2F%2Fwww.cnn.com%2F2021%2F12%2F04%2Fus%2Fmichigan-oxford-high-school-shooting-timeline%2Findex.html" target="_blank">Oxford High School</a> shooting.
Students during class on their first day back. Stuffed animals with notes of encouragement were organized by a survivor of last year's Oxford High School shooting.
Uvalde CISD
Students are escorted into Uvalde Elementary on Tuesday.
Students are escorted into Uvalde Elementary on Tuesday.
Eric Gay/AP
A trooper walks into Flores Elementary School on Tuesday.
A trooper walks into Flores Elementary School on Tuesday.
Nuri Vallbona/Reuters
Memorial remnants are still seen at Robb Elementary, the site of May's mass shooting, as it sat idle on Tuesday. That school is going to be demolished.
Memorial remnants are still seen at Robb Elementary, the site of May's mass shooting, as it sat idle on Tuesday. That school is going to be demolished.
Eric Gay/AP
Students at Flores Elementary School in Uvalde wait to be picked up after their first day back at school.
Students at Flores Elementary School in Uvalde wait to be picked up after their first day back at school.
Nuri Vallbona/Reuters