In many situations I've experienced throughout my career in education, I have seen a velvet image drawn of one learner, where this learner— a student— is subjected to "non-severe" corporal punishment or any form of discipline by the teacher in the classroom after the learner has exhibited behavior classified as "unacceptable" within the circle of good morals, or has violated one of the teacher's instructions, or failed to review their lessons, for example. The next day after this "unfortunate" incident, the learner's guardian— the father or mother— takes their child by the hand and heads to the school, seeking out the teacher to scold them in front of their child, and often in front of others, in an extremely rude manner.
The public school in which I work is subject to a set of laws enacted by the country's lawmakers. Among these laws is the specific law regarding teachers' discipline, which parents have memorized by heart. They are aware that physical punishment of a student is punishable under this law, with a penalty classified at level four, which may lead to the teacher being dragged to court and potentially dismissed from their teaching position, in addition to being thrown into a prison cell, such as at the "Ain Fezza" prison.
A child is born rebellious, not adhering to any rules, no matter their type or social value. The family's first task is to curb this rebellion and teach the child all social norms before they enter primary school, at which point this task transfers to the teacher. This is why I believe that controlling rebellious students— especially those in the first-grade classroom— can only be achieved through punishment, specifically non-severe corporal punishment, as the societal context demands it. This is the same way our families raise their children. The father who refuses to allow his child to be punished by the teacher, no matter what the child has done, is the same one who will strike his son violently if the child breaks any household rules, for example.
The problem with the rebellious learner who sees their teacher being chastised, and often attacked, by the parent is that the image of the teacher as a disciplinarian in their mind is shattered, which causes the student to become even more rebellious, not only toward the teacher but also toward their classmates. At a certain stage— often during adolescence— they will even rebel against their own parents, unfortunately.
There are some violent abuses by certain teachers, which can cause injustice to a student, often because of personal issues between the teacher and the parent, unrelated to education itself. However, if a parent encounters such a situation, they should rebuke the teacher away from their child's sight to preserve the image of the teacher as a disciplinarian in the student's mind. Discipline is necessary at the primary education stage; it is a fundamental part of the educational process that prepares the ground for learning and general life discipline.
What I have noticed is that parents who attack the teacher in most of the situations I have witnessed often have children who are spoiled learners facing difficulties in learning. These parents may attempt to attack the teacher in an attempt to intimidate them, hoping to secure good grades in exams to avoid future problems. However, these situations typically lead to completely opposite results for the learner and their parents. Many teachers who have lost their disciplinarian image in the eyes of the students end up protecting themselves from the parent's wrath by neglecting their rebellious students, which only increases the rebellion of these children. As a result, they do not achieve the desired outcomes, and the losses are twofold— the learners are neither disciplined nor do they learn.