A school bus carrying Roseburg high school and middle school students was hit from behind by a pickup Tuesday on Northeast Stephens Street. There were no injuries and neither vehicle sustained significant damage, police said. The northbound bus, driven by Elizabeth J. Wade, 54, of Winston, was stopped near Chestnut Avenue to pick up students shortly before 7 a.m. James W. Putnam, 67, of Roseburg was also driving north and braked when he realized the bus was stopped, police said. Putnam’s Mazda pickup spun around and its rear bumper hit the back end of the bus. Putnam was issued a …