The most challenging role a teacher plays

     I think the most challenging role a teacher plays is that of disciplinarian.  A teacher has to keep order in the classroom.  This is challenging to do with 20+ students in a class.  A teacher needs a set of rules and consequences for the class to follow in order to keep control of the classroom and stay in charge. 
     This can be difficult to do especially with students who come from homes without rules and structure.  Most students learn quickly and are eager to obey and do the right thing.  There are a few students who are unwilling to conform to the rules of the classroom.  This can be a huge challenge for the teacher.  One student can disrupt an entire class and prevent learning from taking place. 
     From my observations sometimes a teacher needs to have a set of more specific and individualized rules for certain students.  This is hard because sometimes this detracts from the learning of other students.  I have seen this happen and think that would be the most challenging and frustrating thing for me to face if I were the teacher.