We’ve provided age brackets for each of the youth bow and arrow sets mentioned above, and as long as you stay within those, your kid will have a wonderful experience. Do keep in mind, however, that some kids are stronger than other ones; it’s not unusual for a 15 year old to be strong enough to already handle an adult bow. Better to err on the side of caution though and get a bow that has too light than too heavy a draw weight.
All the youth bow and arrow sets mentioned above have an ambidextrous design, meaning they can be used by both right- and left- handed archers. This is great news because your kid has likely never shot a bow before, so you can’t really tell which hand he prefers to use to draw the string.