My mother was a special education teacher so when my brothers and I had trouble in school she was our advocate and pushed to have us tested. We were all labeled "gifted" and my mother demanded that we each have IEP's (independent education plans). We all had behavior issues to different degrees because we were bored. I got kicked out of the library for using it too much in 2nd grade.
The school system did not make it easier for my mother but because of her own teaching background she pushed to get us the services and advanced education we needed. If any teacher or school system discourages you from teaching your children go on the internet and find out your rights. The law that deals with the rights of handicapped kids also addresses gifted children so your school, by federal law, is required to adjust your child's schooling to meet their demands.
I would also recommend getting involved in
www.nagc.org/ which has an advocacy wing as well as great resources for parents. I hope this helps.