User blog comment:Harold Burned-Mane/Tamriel Total War II: Rules and Guidelines/@comment-24696651-20160202164646/@comment-17114085-20160202201502

Pretty much. They also teach the children other things like history, languages, etc. The Court Wizard doesn't need to spend 8 years straight with the children, just 8 in total before they come of age. While they are with the children they won't be able to be sent to change a location's religion.