CASTALIA, Iowa (AP) — Authorities in northeastern Iowa say a school bus carrying two students and a driver has collided with a train near Castalia. Television station KCRG reports that the crash happened just after 9 a.m. Tuesday when a Postville school bus and train crashed. The Winneshiek County Sheriff’s Office says the two students were checked out by paramedics and taken to a local hospital for observation. KCRG says the driver was taken by private vehicle to seek medical treatment. The medical conditions of driver and students were not immediately released.