Respect

Respect is an implied set of guidelines and unspoken rules that people adhere too. Acknowledging these "rules" and "guidelines" makes you a respectful person. Basically, to respect something or someone is to follow the golden rule; do unto others as you would have others do unto you. This basic principle is a never ending cycle, unless you break it. Then you fall into the category of being dis-respectful or someone who doesn't adhere to the norms of society. Example; You're professor has earned their Ph.D. therefore it would be respectful to call them Dr.(name). Why? Because they have earned the right to be called such and out of respect you call them that.
In the classroom respect is a two-sided matter between students and teacher. The students must listen and do as their told in accordance with the teacher and the teacher must understand and respect the differences among students. With that said, too much of a demand of respect from the teacher and the students will shut-down and will be un-responsive. Likewise, if you are far to lenient, they will run all over you. There is a fine line when it comes to respect and in order to have a successful classroom you need to adhere to it.
In the classroom the best way to establish respect is to understand it as a whole. If your class doesn't understand what respect is, how can you expect them to follow through with it? With that said, you need to enforce guidelines in regards to respect. This summer I had the oppurtunity to work at a camp with kids of all ages. The way I established respect was by being the "funny" counselor. Humor worked very well because the kids would always look up to you and do anything they could to not let you down. By establishing that on the first day, I was able to settle any problems very quickly.