[jjj123]

> and those slowest students don't want to learn

This is not a fair assumption and is what leads to kids in remedial classes not getting a decent education.

Kids can be genuinely disruptive or not care, or they can care but struggle with the material, those are orthogonal traits.

I don’t disagree that the lesson goes at the pace of the slowest students, but those slow students deserve a disruption-free classroom too, even if it moves slower than the advanced class.