I wonder if there are any studies about the effects of removing highly gifted students from a class of otherwise average students. I'm aware of a few about the

I wonder if there are any studies about the effects of removing highly gifted students from a class of otherwise average students. I'm aware of a few about the lack socioeconomic mixing: rich kids in classes with just rich kids seem to see almost no positive effect, but poor kids who experience a good social mix in their class fare far better than their peers who are in schools where everybody comes from a poor background. I would expect a similar effect here: gifted kids who are accelerated might show no long term negative psychological effects, and might do a little better academically, but what about the overall effect on everybody else? Is it really better to have classes with the 1% smartest removed? At least from a political and ethical perspective I would advocate for greater mixing, teaching more fortunate kids that they should put their advantages to fruit by pulling the rest of the class. In other words focus on collaboration rather than competition. However, I have no data to back this up.