An analogy that I have read is that keeping an advanced kid with their agemates is like putting a third grader in a first grade class and expecting them to be mature enough at such a young age to pay attention and not be distracting. If you spend some time reading the older threads here you'll see debates about the pros and cons of acceleration. In theory it sounds good, if you go to school to learn you'll be too busy to create your own entertainment in class.

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar