At schools you have the power to control how you treat others, but not always how others treat you. Here are some tips on how to deal with people that you do not necessarily like or get along with.
Schools are just training grounds for the real world. But no matter how hard you try, you cannot please everybody. Believe me I have tried. One way to ease the thoughts of others is to treat them with respect. Respect is one of those terms like “love”, whose definition depends on a great deal on the mind frame of the person who you are talking to. Have you ever heard the term “To earn respect you must give it first”? My personal feeling is that you should automatically treat someone with respect, until that person proves that they don't deserve it. The way you treat people can make them like you or hate you; respect or criticize you. That is all up to you.
Another way on how to treat people is to remember other people’s feelings. There are always going to be people in your life that irritate, and annoy you. For example a younger sibling. As to why they do and say the things they do I don’t know. Sometimes you want to snap back at them about how annoying they are, or ignore them because you don't particularly like them, but remember, you have to be considerate of how that person feels and why they do and say certain things. Before you can judge, you need to understand that person's feelings and thoughts.
Finally the last tip I have for you is to just to be and act like yourself. If you don’t act like yourself sooner or later it will catch up to you and you won’t like who you became. From knowing people who have gone through this I can tell you that they end up depressed and sometimes talk about suicide. Don’t let this be you.
Ultimately try to “treat others as you would want to be treated”. If it doesn’t work out with that particular person than who cares, just try and move on to the next person and give it...