The displays of bad temper are nothing new in kindergarten and first grade, but the behavior of a 6-year-old girl this fall at a school in Fort Worth, Texas, had even the most experienced staff members wanting to run for cover. Asked to put a toy away, the youngster began to scream. Told to calm down, she knocked over her desk and crawled  under the teacher's desk, kicking it and throwing out the contents of the drawers. Then things really began to worsen. Still screaming, the child stood up and began casting books at her terrified classmates, who had to be accompanied to safety. Just a bad day at school? More like a bad season. The desk-throwing incident followed scores of other crazy acts by some of the youngest Fort Worth students at schools across the district, and even the country. There have been an increasing number of kindergartners and first-graders with violent behavior and it has become an alarming trend. The youngest school kids are acting out in really ridiculous ways and violence is getting younger and younger. Why? Educators and psychologist argue that they are witnessing the result of a number of social trends that have come together in a most unfortunate way. Many mention economic stress, which has parents working longer hours than ever before, kids spending more time in day care and everyone coming home too tired to engage in the kind of relationships that build social skills. In addition, many educators worry about rising academic pressure in kindergarten and first grade as the students have to take the yearly tests demanded by the No Child Left Behind Act. They believe that even more important than early reading is the learning of play skills. Other experts also point out that violent behavior in children has been closely linked to exposure to violence on TV and in movies, video games and other media. They insist schools try to teach kids what they have failed to learn at home, for example, having varieties of anti-violence and character-education programs, instructing children to interact with people who love them and teaching them how to behave. The passage mainly discusses about  _  .
causes and solutions of school violent behaviors student behavior management in the digital age kids' exposure to violence on TV and in movies functions of character-education programs