Grade 6 pupil Lianna escaped the classroom for a while to help set up the Christmas tree at the Monash Medical Centre on Wednesday. Students from St Peter's Primary School in Clayton headed to the hospital to bring some Christmas cheer by setting up the tree and painting windows in the children's play room. This year the theme is The Polar Express, and children in the playroom will be greeted with wintry paintings of people sitting in a train across the windows.