The Dallas Independent School District has issued a statement explaining why students received a controversial book featuring Winnie the Pooh. The book, titled Stay Safe, is a tutorial on how to react when danger is near, advising children to lock doors, turn off lights and quietly hide. The book was sent home with students without explanation or warning to parents, causing concern among some parents. The district has apologised for the confusion and stated that it works hard every day to prevent school shootings by dealing with online threats and improving security measures. The book was published by Praetorian Consulting, a Houston-based firm that provides safety, security and crisis management training and services. The company uses age-appropriate material to teach the concepts of “run, hide, fight” – the approach authorities say civilians should take in active shooter situations.