Identify the best contact at the school. Sometimes your ideal ally is your child's primary teacher, and sometimes it's the guidance counselor. In other cases, your child's favorite instructor, such as art, music or physical education teacher, may be the perfect person to approach. Ask about the social atmosphere at the school, how your child fits in with peers and how receptive the child's teacher will be to your distress.
Some contacts may be more unconventional, such as the bus driver or cafeteria worker, but their positions allow them to view situations most other teachers or administrators miss.