Yes, children under 10 should be sent to boarding school, if it is the best option for them. If a child has special needs, or if they do not have a good home life, attending a boarding school can be the best option to give them a good chance in life. They should take advantage of it if they need to.
No, children under 10 should not be sent to boarding school. Instead, they should be treated to a loving home with supportive parents who will help them through their formative years. Boarding schools often breed resentment in children, both for the school and for their parents. Parents should be providing a safe place for children and support in school.