First panel, clearly being straight-up bullied. There really is no other interpretation.
Second panel, the kid is drawing in class? Okay? There are a ton of reasons that could be the case, and rarely is it something as simple as “he’s acting up for no reason”. Maybe the teacher is failing to engage the student. Maybe he has home trouble (which seems likely given the third panel). Maybe he’s neurodivergent and isn’t getting the resources he needs. It is irrational to expect every child to just automatically and magically conform to all of the norms and expectations of a classroom setting. That is a learned skill, and children learn at different rates and in different ways. It is the job of a teacher to meet children where they are at and give them the support they need to learn, rather than expecting children to simply do their job for them.
Third panel, he has a toolbox. I immediately interpreted it to mean that he’s tinkering with tools in his environment. That is a trait that should be encouraged and nurtured (even if guidance towards less destructive outlets is needed), not met with anger. Exploration and learning how things work is absolutely essential for kids, and sometimes it takes missteps to learn. Destroying things is one of the many ways children learn about cause and effect, and it’s a very natural impulse. It is a parents job to help guide their exploration and learning, and reinforce desired behavior, not to lose control of their own emotions and get angry at a child for doing their job. Like with the classroom setting, it is irrational to expect children to automatically conform to the ideals and expectations that adults have spent many years mastering themselves.
No idea how you get any of that from the comic.