I'd say to sit down with them and respectfully admit that you want to stay. Give a list of reasons why you want to stay at that school, and make sure to be very polite. If they still are set on changing schools, maybe ask them why and hear out their side of the story.
If you DO end up changing schools, at least you can expand your social network (look it up if you don't know what that means).
Try talking it out with them. Suggest alternatives. Explain why you disagree with their decision in a respect manner. If none of that works, well...I guess you'll have to change schools. But it won't be <em>all </em>bad. You might meet new people and learn new things! New opportunities.
