School Safety

FILE - This undated file photo provided by Rachel Short shows Kendrick Castillo, who was killed during a shooting at the STEM School Highlands Ranch on Tuesday, May 7, 2019, in Highlands Ranch, Colo. Seniors from the school graduated Monday, May 20, 2019 in a ceremony hosted by the Denver Broncos hosted commencement ceremonies at their training facility in suburban Denver. Castillo was fatally shot as he and two classmates tried to stop one of the two gunmen who attacked the school. Valedictorian Emma Goodwill asked her classmates to "love so fully and fundamentally like Kendrick." (Rachel Short via AP, File)

Angel Granados-Diaz, 19, a Parkrose High School student accused of bringing shotgun to class last Friday, appears in a brief court hearing in Portland, Ore., Monday, May 20, 2019. Granados-Diaz pleaded not guilty Monday during the brief court hearing to a felony count of possessing a weapon in a public building and three misdemeanors. (Dave Killen/The Oregonian via AP, Pool)

FILE - In this Feb. 14, 2019, file photo, people gather around the "Temple of Time" in honor of the 17 that were killed during the Marjory Stoneman Douglas High School shooting in 2018 in Coral Springs, Fla. The temple built as a memorial to the 17 victims of a Florida high school mass shooting is to be burned to the ground in a symbolic gesture of healing. (AP Photo/Wilfredo Lee, File)

Students gather outside Parkrose High School during a lockdown after a man armed with a gun was wrestled to the ground by a staff member, Friday, May 17, 2019 in Portland, Ore. The Portland Police Bureau said in a statement Friday that no shots were fired at Parkrose High School, no one was injured and the man is in custody. Police say there are no other suspects. (Dave Killen/The Oregonian via AP)

Pallbearer guide the casket to a waiting hearse after the memorial service for Kendrick Castillo, who was killed in the assault on the STEM Highlands Ranch School, Wednesday, May 15, 2019, in Highlands Ranch, Colo. (AP Photo/David Zalubowski)

FILE - In this May 8, 2019 file photo, Devon Erickson, the accused STEM School Highlands Ranch shooter, appears at the Douglas County Courthouse in Castle Rock, Colo. Prosecutors are expected to file charges Wednesday morning, May 15, against the suspects, Erickson, and 16-year-old Alec McKinney, who are accused of killing student Kendrick Castillo and wounding eight other classmates at the STEM School Highlands Ranch on May 7. The memorial service for Castillo who is hailed as a hero for tackling one of the gunmen is set for Wednesday afternoon. (Joe Amon/The Denver Post via AP, Pool, File)

Joshua Jones, front, who was wounded while trying to stop a gunman involved in the attack on the STEM School Highlands Ranch last week, speaks during a news conference as his father, David, listens Tuesday, May 14, 2019, in Littleton, Colo. Jones, Kendrick Castillo and Brendan Bialy tackled the teen who opened fire at STEM School Highlands Ranch south of Denver on May 7. Castillo was fatally shot. (AP Photo/David Zalubowski)

This undated photo provided by Rachel Short shows Kendrick Castillo, who was killed during a shooting at the STEM School Highlands Ranch on Tuesday, May 7, 2019, in Highlands Ranch, Colo. (Rachel Short via AP)