An emergency personnel looks inside a school bus after the bus went off a Houston freeway and rolled  in southeast Houston on Tuesday, Sept. 15, 2015. The Houston Independent School District says a girl died in Tuesday morning’s accident. Emergency responders say the student was dead at the scene.  Officials are trying to determine what caused the crash. A district spokeswoman says it appears the bus went off an overpass. (Cody Duty/Houston Chronicle via AP) MANDATORY CREDIT

Houston school bus crash kills 2 students

District spokeswoman Ashley Anthony says the bus apparently drove off an overpass. Guard rails were damaged. The bus rolled and landed on it…