Maybe you could try to ask them to please be quiet because you are doing school. If you've already tried that..maybe ask a parent or adult to ask them to be quiet. Or maybe you could go some where else to do your school..like a different room or a friends or starbucks.
Bossuet's idea that monarchies, as representatives of God's will, entitled them to rule absolutely, ignoring the will and well-being of their subjects is called the divine right of kings.