Smaller classes would help until parenting trends change (assuming they would, but maybe they won't).

There is no longer the firm expectation that students sit and don't disrupt. One kid in a better, younger grade seemed to have no rules at home, and possibly has ADHD, the school allows him tablet time and free roam if he gets bored--so they don't bother others. Since other kids were continuing to work the kid had nobody to hang with. Parents came in and said my kid feels left out when they are free roaming with tablet, and asked school to give all kids free tablet time during lessons so their kid doesn't feel excluded.

LOL. Until that flawed logic parenting style disappears we are going to have issues in classrooms.

Smaller class sizes and more teachers. Part of why the problem kids are a problem is because the one teacher has to stop everything to deal with them.

Also, we need to stop pretending education is one size fits all. A lot of the "problem kids" are kids that aren't well suited to sitting down for hours at a time having lessons dictated to them by an overworked, underpaid teacher. This is often especially true for young men. Our education system hasn't been updated in over a century, really, in terms of this one size fits all approach. We need more outdoor-based education settings for these types of students, for example, leaving the classroom learning to those who are suited for it so they aren't being distracted by the bored kids who need to be out doing stuff all day long and learning experientially.