The Princes' School in Riyadh, Saudi Arabia, was established by King Ibn Saud specifically to ensure a high level of education for members of the House of Saud and sons of other foremost Saudis. Early in the Ibn Saud newly established country the The Council of Senior Scholars or ulema thought education should only involve studying the Qur'an and shari'a law. The school was only conducted within Royal court.
References
Princes' School Wikipedia(Text) CC BY-SA