SSR as applied in the school in question.
The rules as they are outlined in the place in question determine the standard.
If you don't believe my outline of our local rules, just call me a liar and be done with it.
Attempting to extrapolate the argument out to the general concept ("somewhere on the planet, the custom is different...") does nothing to support your point, if you have one, but it does a dandy job of making you look like a weasel.