Restraint is sometimes necessary at the school where I work, not used as much recently as it was a few years ago. I agree with PP who said it should only be used if the child is attacking someone and won't stop or is attempting to flee to an unsafe area. Most recent experiences would be restraint lasting only a few minutes or less than a minute. Mostly we just contain the child in a safe area rather than touch them.

Here is an illustration of the CPI child restraint position that is taught. There is lots of info on this on the internet, just Google "CPI child restraint" and you will see lots of info and images.

Hi OP. First, I'm sending you a hug. I know this is hard.

I see a lot of well-intentioned responses from parents here who likely don't have children who engage in behaviors that would necessitate a hold. I do have a child who has displayed aggression toward adults at school, and I want you to know you're not alone. This kind of thing can feel really isolating.

You've gotten some excellent guidance from PPs 18:16 and 18:35.