It is well known. Everyone knows it. What has been forbidden is actually doing it. What the teacher did will likely result in a long paid vacation followed by early retirement, and other teachers will be warned that using any physical violence to prevent another child from being injured is strictly forbidden.
Find anyone over 45; we all know how we were controlled as children. We know what The Paddle is, and where it was kept when we were in primary school. Few ever felt the paddle in use; just the existence was enough to keep most of us in line. And then we watched it be outlawed, and watched school violence soar. We watched as schools became prisons with iron bars surrounding them to ‘protect’ children. We watched metal detectors being put in, random searches, police dogs patrolling corridors in the schools of our children.
“Primary grades”? In hi school I “heard” guys get “the paddle”