This is a great guideline for diluting essential oils for children, keep in mind always do a patch test on a small area to test for sensitivity. Also, you can always start with adding a minimum of less oils and add more as needed.
I regularly put together essential oils in roller balls for my children and their emotional and physical needs.
I will make concentration and homework blends for my children to take to school for testing time and when they feels the need for extra support. My boys enjoy being able to roll on some essential oils to help them through their standardized testing or just their school day. I also love diffusing it when they come home at the end of a long school day.