Kevin Lein, principal of Harrisburg High School, works at his desk in his office Friday, Oct. 2, 2015, at Harrisburg High School in Harrisburg, S.D., just days after he was shot. Lein was shot in the arm Wednesday morning in his office. Mason T. Buhl, a 16-year-old student who allegedly shot Lein, faces charges of attempted murder and commission of a felony with a firearm, according to Lincoln County StateÕs Attorney Tom Wollman.