Not all public schools are bad. I've been wonderfully blessed to have my 13 year old son in a wonderful middle school with wonderful teachers. I've never had a problem, and I keep in touch with his teachers frequently.
People need to pick their battles wisely. This day and age, we should have more to worry with then ear piercings and hair color. Kids need to express themselves. Many will outgrow these things on their own. I don't care if the little girl sitting next to my son has purple hair and a tatoo. It...