Let’s say one of your students is intimidating you or even scaring you. You feel threatened, bullied, and teaching became a real nightmare. Why is this happening? Children with antisocial or extremely aggressive behaviors can be diagnosed with Oppositional Defiant Disorder (ODD) or Conduct Disorder. Putting a definition over these two will help you understand why certain behaviors are being displayed. These are the main things everyone should know about Oppositional Defiant Disorder (ODD) and Conduct Disorder.