Don't forget that many "really smart" kids (perhaps gifted) are underachievers in school due to lack of intellectual stimulation. Conversely, the straight A kid is not always the smartest kid in the class. So yes, the most talented kids should be grouped together, in my essay typer 's opinion, for more stimulation and incentive. Highly intelligent kids often get turned off by busywork and refuse to finish it. Motivation is key.