input: Background: A modern example of school discipline in North America and Western Europe relies upon the idea of an assertive teacher who is prepared to impose their will upon a class. Positive reinforcement is balanced with immediate and fair punishment for misbehavior and firm, clear boundaries define what is appropriate and inappropriate behavior. Teachers are expected to respect their students; sarcasm and attempts to humiliate pupils are seen as falling outside of what constitutes reasonable discipline.[verification needed]
  Question: What type of boundaries help to define the way kids behave?
  Answer:<extra_id_0>.
output: <extra_id_0> firm, clear boundaries<extra_id_1>