Classes were canceled at Columbine High School Wednesday in remembrance of those killed in the shootings at the school 12 years ago. Twelve students and a teacher were killed in the shootings on April 20, 1999. The teenage gunmen committed suicide. No events were planned at the school on Wednesday, but a memorial to the victims in Clement Park near the school is open to the public.The victims of that tragic shooting were: Cassie Bernall. A born-again Christian who was active in church youth programs and Bible study groups. Steven Curnow. A Star Wars fan who dreamed of being a Navy Top Gun and piloting an F-16. Corey Depooter. He loved to golf, hunt and fish. He had recently taken a job at a golf club to save up for a boat with a friend. Kelly Fleming. She was an aspiring songwriter and author. Matthew Kechter. He hoped to start for the Rebels' football team. Daniel Mauser. He earned straight A's on his last report card. He ran cross-country and joined the debate team. Daniel Rohrbough. He helped in his father's electronics business and worked on family farms during the summer. He was shot holding an exit door open for fleeing students. William "Dave" Saunders. A teacher at Columbine for 24 years. He coached girls' basketball and softball. Rachel Scott. She had recently played the lead in a student play. Isaiah Shoels. He wanted to attend arts college and become a music executive. John Tomlin. He went on a missionary trip to Mexico with his family and built a home for the underprivileged. Lauren Townsend. She was captain of the varsity volleyball team. She wanted to major in biology in college. Kyle Velasquez. Neighbors said his personality touched everyone he met.Thirteen lives lost are all being remembered by family, friends and a community that will never forget.Learn more about the Columbine Memorial at Clement Park. See images of the memorial.