Young children--Kids are resiliant. Move into a neighborhood with kids, they make new friends easily. Move in the middle of the school year and they'll be assigned a buddy and get special introductions.
Teens -- Choose their high school and THEN buy a house. Find a school based on their interests, music, sports, or academics.
To another state -- Every part of the country has it's own traditions, likes & dislikes. People are different everywhere!