SANTA ROSA, Calif.—Detectives said Saturday that a fight involving three students at a Northern California high school began with an argument outside art class and culminated in a fatal stabbing.
Two groups of students were arguing Wednesday outside art class at Montgomery High School in Santa Rosa, and once inside, a 16-year-old junior from one of the groups confronted a 15-year-old freshman in the other group, Santa Rosa police said in a statement. A fight broke out and the 15-year-old stabbed the 16-year-old with a knife at least three times—once in the chest and twice in the back, authorities said….