Let's say you can't get your child moved. You can do two things. First, you tell your child that life isn't always fair. Sometimes it is grossly unfair. I have bosses I don't like.
Kids adapt and they're resilient.
Tell me what you've learned in school today. Then you make it interesting by the things you do at home. If the child's studying the Civil War, for example, take her to a local battle re-enactment. Go to the library. Get books, videos, educational computer games.