They plan to demolish Robb Elementary in Uvalde, Texas, and rebuild it after the shooting. This is what they have done with the schools where other massacres occurred

These were the most violent school shootings in the US 2:08

(CNN) —

The extensive trauma left behind by school shootings can be too overwhelming for survivors to even think about going back to school.

In Uvalde, Texas, students at Robb Elementary School suffer in the aftermath of a massacre that claimed the lives of 19 children and two teachers.

• America's Worst School Shootings: From Sandy Hook to Uvalde

But at some point, classes must resume.

Now, questions abound about whether or when a school devastated by a mass shooting should reopen.

"In many cases, these schools are closed or completely renovated in an attempt to lessen the traumatic memories they became for members of the community," explained the Center for Violence Prevention at Children's Hospital of Philadelphia.

• Uvalde, Texas elementary school shooting turns a week old: Here's what we know so far

It's unclear what will happen to Robb Elementary School, which moved up the end of its school year after the May 24 massacre.

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But when President Joe Biden visited Uvalde on Sunday, he told Texas state Sen. Roland Gutierrez, "We're going to tear that school down, build a new one," the lawmaker told CNN affiliate KSAT.

Funerals for Uvalde victims begin 4:51

Gutierrez noted that there is a federal grant process so that schools can be demolished after suffering mass shootings.

And the mere fact that it exists is already depressing.

"What kind of world do we live in that legislation was created to demolish these schools?" Gutierrez told KSAT.

This is what happened to other schools after deadly shootings.

Sandy Hook Elementary School

Date of the attack:

December 14, 2012

Location:

Newtown, Conn.

Number of dead:

26 (20 children aged 6 and 7 and six adults)

• Shooting at the Sandy Hook school: this was the massacre that shook the US in 2012

What happened to the school:

The entire school was demolished and rebuilt.

Three weeks after the massacre, students from Sandy Hook traveled to the nearby city of Monroe and began attending classes at Chalk Hill High School, which was no longer used as a school.

Sandy Hook families post creepy video 1:26

Four years after the massacre, the recently rebuilt Sandy Hook Elementary opened its doors to students, including fourth graders who were in kindergarten when the shooting occurred.

Columbine High School

Police patrol outside Columbine High School in 2019, days before the 20th anniversary of the massacre.

Date of attack:

April 20, 1999

Location:

Littleton, Colorado

Death toll:

13 (12 students and one teacher)

What happened to the school:

Columbine High School closed for the remainder of the school year.

Authorities said the shooting damaged about 2,136 square meters of the facility and left between 900 and 1,000 bullet holes and shrapnel in the walls and ceilings.

• Mother of Columbine shooter speaks out for first time about shooting

Four months later, at the start of the new school year, most of the school reopened.

Except for the library, where most of the shooting took place.

The building was demolished and replaced with a rebuilt school library, called the Hope Library.

Marjory Stoneman Douglas High School

Family man targets easy access to guns in the US after Texas shooting 1:12

Date of the attack:

February 14, 2018

Location:

Parkland, Florida

Death toll:

17 (14 students and three staff members)

• Parkland massacre: this was the shooting at a school that left 17 people dead in 2018

What happened to the school:

Students returned to campus two weeks after the massacre.

But Building 12 at the school, where most of the victims died, was sealed with emergency tape and its windows covered.

Later, a new building replaced the temporary classrooms that the students used after the shooting.

Santa Fe High School

Date of the attack:

May 18, 2018

Location:

Santa Fe, Texas

Number of dead:

10 (8 students and 2 teachers)

What happened to the school:

The students returned 11 days after the massacre.

Even though there were only two days left in the school year, senior Kaitlyn Richards said she didn't want her high school journey to end with the massacre.

"I don't know if we'll ever be ready to go back to school," he told CNN affiliate KTRK the day classes resumed.

"But I don't want that last day to be my last memory of my graduation year. I just want to know that I get to see all my classmates one more time," she added.

CNN's Jennifer Henderson contributed to this report.

Columbine Sandy Hook Massacre Parkland Uvalde