Yes: Make an appointment to discuss your concerns with your child's school. If any issues can be resolved at this stage this may avoid any disruption to your child's education. Changing schools should be a last resort when all other options have been explored.
You may think that a change of school is necessary because you feel that your child is being bullied. All schools have anti-bullying policies, and, as such, if you think your child is being bullied you need to tell the school immediately to discuss your concerns further.
No: Go to number 3.