Parkland students lead nationwide school walkouts Students at Marjory Stoneman Douglas High School lead a nationwide protest by walking out of classes to mark the 19th anniversary of the 1999 carnage at Columbine High School in Colorado which left 13 people dead. Marjory Stoneman Douglas is the high school in Parkland, Florida, where 14 students and three adult staff members were killed by a troubled former classmate on February 14.