Citizen Times: Students returning to Asheville High School on Tuesday will see some major changes to the 91-year-old building. There’s a new heating and cooling system allowing rooms to be regulated individually, along with new ceilings making the building more energy efficient. About 300 windows were replaced, allowing teachers to bring fresh air and sunlight into classrooms. New energy efficient lights will help cut down on power bills. Asheville City Schools spend nearly $1 million a year …