DENISON, TX -- A former Denison ISD teacher was arrested after police say she admitted to having an improper relationship with one of her students. Some of those encounters reportedly happened in the classroom. "I've heard stories, like I've seen across the nation of it happening in other places, but I never expected it to happen here," said parent, Amy Timberlake. Parents we spoke to say they can't believe 34-year-old Julie Bollinger, a former Denison High School teacher, was arrested for having an improper relationship with a student. "It is a crime for a teacher to have a relationship with...