@taydev I played with a teen vampire shortly (just aged her to young adult). First she lived in a house in Forgotten Hollow, and she was completely fine going to school. Yes, she felt uncomfortable as soon as she walked out the door, but I don't think she was even close to death. Also, when she got home, I had to keep an eye on her and make her go inside immediately. Unless you teen has the thin skinned weakness, going out for short while like for travelling to school and back should't kill them. And also, as someone mentioned, you could use the sun resistance potion or give them the sun resistance power.
But what I actually did, was move my vampires into San Myshuno into a penthouse. There my vampires never have to go outside to travel anywhere (except possibly at the other end).