This is absolutely a huge factor, if not the biggest factor in education: kids who are actively disruptive and harmful to the learning of others being kept in with other kids, draining all of the attention from the teacher.
The causes and solutions are not as simple as "these kids are bad, kick them out of school", but any solution needs to involve kids who aren't disruptive and WANT to learn getting an environment conducive to that.
The causes and solutions are not as simple as "these kids are bad, kick them out of school", but any solution needs to involve kids who aren't disruptive and WANT to learn getting an environment conducive to that.