I agree with Cam to a large degree, but many people cruise with teenagers. Kids do adapt and a good source for information is Tom Neale. He and his wife raised two daughters aboard and have written extensively about their life cruising. I am a high school teacher and as such, I see the interaction between the kids as a valuable aspect of growing up. Of course, many kids growing up cruising are often well adjusted, can make friends easily and are often not as materialistic as kids I see in high school.
Good luck, Tom