I have read a number of different posts about classroom behavior when there is a sub. I understand all the ways a sub can start off on the right foot and from what I've read it sounds like most students will treat the day as if the regular classroom teacher is there. However, suppose there is that one student who refuses to focus or do the assignments because he or she would rather disrupt the lesson and disrespect the substitute. Is it really okay to send the child to the office (after three 'strikes' and an act of discipline) or is that heavily frowned upon? Is that something you can, or should, even ask the office staff or neighboring teacher about? I guess I'm preparing myself for the worst case scenario, because the last thing I want to do is waste time in a 'power struggle' when all I want is to have as much of a productive day as possible.