CNN
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The Apalachee High School and Winder, Georgia, community is mourning the mass shooting Wednesday that left two students and two teachers dead and nine others injured, the latest toll in a nation where gun violence appears to be showing no sign of abating.

The Georgia Bureau of Investigation identified those killed as Richard Aspinwall, 39, Christina Irimie, 53, and Mason Schermerhorn and Christian Angulo, both 14. Of those taken to hospitals with injuries, eight were students and one was a teacher.

Apalachee High School teacher Stephen Kreyenbuhl told CNN’s Sarah Sidner how “difficult” it is for him to come to terms with the loss of two peers.

“They made a difference,” he said of Aspinwall and Irim. “They were there for their students every day, and it’s going to be very, very difficult and hard to move on.”

Here’s what we know about the victims.

Aspinwall, a math teacher, was described as a sweet and kind person by Ariel Bowling, a sophomore who took Aspinwall’s geometry class during her freshman year.

“He always pushed his students to do well in his classes,” Bowling told CNN, growing emotional as she recalled the teacher. “He was just really nice.”

Michael Gordon, another student, echoed this, telling CNN: “He was a good guy… I had him — I’m in the 10th grade — so I had him all year long and he taught me a lot.”

Aspinwall also served as an assistant football coach, serving as defensive coordinator for the Apalachee Wildcats football team.

“As our community, school and football program begin the grieving process, we are so grateful for the outpouring of support,” the Apalachee football program said in a message to the X on Thursday morning. “To our beloved defensive coordinator Ricky Aspinwall, we will carry you close to our hearts. We love you, Coach A’s!!!”

According to the school’s website, Irimie also taught math at Apalachee High School.

One student, Isaac Sanguma, told CBS Mornings on Thursday that he struggled with math. But Irimie was a “really nice” teacher — she liked to tell “corny jokes,” he said. She never made him feel inferior.

“She never made me feel stupid,” he said. “You could get a question wrong on the board and she wouldn’t make you feel stupid. She’d make you feel welcome.”

His older sister described 14-year-old Christian as a “very good kid” who was “very sweet and caring.”

“He was so loved by so many,” Lisette Angulo wrote on a GoFundMe campaign to raise money for Christian’s funeral, which included a photo of the teen holding a cake on his 14th birthday. “His loss was so sudden and unexpected. We are truly heartbroken. He truly did not deserve this.”

Mason was a 14-year-old student at Apalachee High School.

CNN’s David Williams, Jillian Sykes, Andy Rose and Sara Smart contributed to this report.