My extremely social and energetic 5-year-old DS has started school recently and keeps talking about the older boys and girls he has been playing with at break times. I know he is very chatty and well-liked in his class (he seems to be a little leader!), but he just seems to gravitate towards the older kids (whom he seems to easily befriend). Any idea why this might be? Should I encourage him to rather stick to kids in his class (for some reason this would make me feel more comfortable, but not sure why I feel like that), or do you see no problem?