On September 10, 2025, a quiet mountain town 30 miles west of Denver faced an unimaginable tragedy. A 16-year-old student opened fire at Evergreen High School, critically wounding two classmates before taking his own life. The attack lasted roughly nine minutes, yet its effects will echo for generations.
This guide covers everything we know about the Evergreen High School shooting. It includes a detailed timeline of events, information about the victims, the shooter’s background, the heroic response from staff and police, and the ongoing debate about school safety and gun laws.
🔍 The Attack: A Nine-Minute Nightmare
Timeline of Events
Authorities released a detailed timeline based on dispatch records and school surveillance footage. Here is how the tragedy unfolded:
Inside the Hallways
According to student witnesses, the shooter walked through the hallways firing randomly at students. One student told reporters: “He just walked and shot. He didn’t yell or say anything. It seemed like he was on autopilot.”
However, a faculty member — whose identity remains private — locked a door just seconds before the shooter arrived. Officials credit this quick action with saving dozens of lives.
In another instance, a teacher held a door shut while the shooter tried to open it. This brave act prevented the gunman from entering a classroom where 30 students were hiding. According to the sheriff’s office, this “heroic act” likely prevented further casualties.
🕊️ The Victims
Two students sustained critical injuries during the attack:
🔹 Kyle Andrews (16) — suffered multiple gunshot wounds to the chest and arm. Medics rushed him to Swedish Medical Center in Denver.
🔹 Matthew Thompson (15) — sustained a gunshot wound to the abdomen. Paramedics airlifted him to Children’s Hospital Colorado.
Both students survived and remain in stable condition as of September 12, 2025.
Authorities confirmed that the shooter died from a self-inflicted gunshot wound to the head. Fortunately, no other students or staff suffered physical injuries. However, many students are now receiving trauma counseling to cope with the emotional impact.
🎯 The Shooter: Desmond Holly
Authorities identified the suspect as Desmond Holly, a 16-year-old junior at Evergreen High School. According to Jefferson County Sheriff Jeff Shrader, Holly had become “radicalized by some extremist network” online.
Background
Holly had transferred to Evergreen High School just two weeks before the shooting from a school in nearby Lakewood. Authorities confirmed that investigators were looking into his online activities, but no formal charges had been filed before the attack.
“We have determined that the suspect acted alone,” Shrader stated at a press conference. “There is no evidence of a wider plot or a second shooter. The suspect’s family is cooperating fully with law enforcement.”
Weapons Used
- 🔫 Handgun — used for most shots fired in the hallway
- 🔫 Handgun — found with the shooter at the time of his death
- 📦 Ammunition — multiple magazines discovered in the shooter’s backpack
🚨 Law Enforcement Response: 100 Officers in 2 Minutes
The Jefferson County Sheriff’s Office received the first 911 call at 12:22 p.m. Within two minutes, 100 officers from multiple agencies had arrived at the school.
📞 911 Call Breakdown:
• First call: 12:22:15 p.m.
• Officers on scene: 12:24:30 p.m.
• School cleared: 12:45 p.m.
• All students evacuated: 1:10 p.m.
Sheriff Shrader praised the “quick and professional response” of his deputies. They arrived on the scene before the shooter had finished his rampage, which likely saved additional lives.
🔒 Lockdown: How Locked Doors Saved Lives
One of the most remarkable aspects of the Evergreen shooting was the effectiveness of the school’s lockdown protocol. According to the sheriff’s office, locked classroom doors prevented the shooter from entering occupied rooms.
“The doors were locked,” Sheriff Shrader explained. “The staff followed their training perfectly. The shooter walked through the hallways, but all the students remained in rooms with locked doors.”
This action significantly reduced the number of casualties. In some rooms, students could hear the shooter trying door handles, but none of the doors gave way.
❤️ Community in Mourning
Evergreen — a close-knit community of about 9,000 people — held a candlelight vigil on the night of September 11, 2025. Hundreds of residents gathered at Evergreen Lake Park to pray and honor the victims.
Furthermore, the community launched a fundraising campaign for the two injured students — Kyle Andrews and Matthew Thompson — to help cover their mounting medical expenses.
🇺🇸 The 47th U.S. School Shooting of 2025
The Evergreen High School shooting marked the 47th school shooting in the United States in 2025. It also stands as the 13th in Colorado since 1999 — a grim statistic that includes Columbine, Arapahoe, STEM, and now Evergreen.
⚖️ Gun Control Debate Reignited
The Evergreen shooting has once again reignited the national debate over gun control. President Biden’s administration responded by announcing a new executive order on safe storage requirements for firearms.
In a statement, Secretary of Education Miguel Cardona called the shooting “a tragedy in too many communities.” He added that “the administration and Congress need to do more, including on gun safety laws, to protect children.”
Meanwhile, Colorado’s state legislators have announced a special session to consider three proposals:
- 🔹 Universal background checks on all firearm purchases
- 🔹 Red flag laws to temporarily remove firearms from individuals deemed at risk
- 🔹 Safe storage requirements requiring weapons to be locked
📚 Resources & Related Sites
Explore these trusted platforms for more information on school safety and gun violence prevention:
❓ Frequently Asked Questions
✅ Final Thoughts
🌟 “The community’s strength will light the way forward.”
The Evergreen High School shooting serves as a painful reminder of the ongoing threat of school violence in America. Although the community grieves, there is also hope in the stories of brave teachers who locked doors and emergency responders who arrived within minutes.
As investigators continue their work and lawmakers propose new solutions, one truth remains clear: the Evergreen community will never be the same, but it will endure.
- 📈 Support the victims’ families
- 🕊️ Advocate for safer schools
- 📚 Educate yourself on signs of radicalization
- 🧠 Prioritize mental health resources
Stay informed. Stay safe. Stay connected.