I happen to be a parent of 12 and 7 year old... They learned most of the horrible language and manners they have from other kids at school, and let me tell you it is no picknick getting them to stop either.
Both my children attend an on post military school they have had to wear uniforms and gotten to attend military schools that didn't have them. Uniforms don't solve anything, however no one is allowed to advertise with their clothing, no name brand tags or anything of the sort. Basic jeans, shirts, sweaters, skirts, coast, and materials. Their clothing is still heavily restricted about the only thing that makes any kid stand out is their shoes. As for military schools being bad, I discovered they were a lot better for my kids, they have more qualified teachers, the classrooms are smaller, they have better programs for children with disabilities, they have tutor programs which a large majority of public schoosl do not have and if they do you usually have to pay for it. As for mindless drones, I have sat through the classes my kids take and I haven't seen that at all. IF anything they encourage to kids to think for themselves.