About 500 students are heading back to classes for the first time since a tornado devastated their southern Indiana school a month ago. The Henryville Junior-Senior High School students arrived Monday morning at the Mid America Science Park in nearby Scottsburg, where conference rooms and storerooms have been converted into classrooms, computer labs and a cafeteria. West Clark schools Assistant Superintendent John Reed said the district is trying to help students get back in the academic groove following the March 2 storm. Elementary students returned to school March 21 at a rented church building in New Albany. School officials plan to ask the state to waive the requirement that students must attend 180 days of class.