How to Educate a Child
Educating a child in your house will help them build their skills and traits while they are young, which will help you in expanding your titles. When you educate a child you are choosing a Guardian from your court or a friendly court with a close family member that will be assigned to the child, this is called their Ward.
Guardians tend to pass on their personality Traits to their Wards, as well as their Culture, and/or Faith, if so specified in the Education Focus during the selection of a Guardian screen.
The Guardian can reside in a different court. Entrusting a close family member to the mercy of another ruler in this way will increase their opinion of you.