The phrase "a norm that" is correct and usable in written English.
It can be used to introduce a standard or principle that is being defined or discussed.
Example: "There is a norm that dictates how we should treat our colleagues with respect and fairness."
Alternatives: "a standard that" or "a principle that".
"This is a norm that cannot be accepted internationally at the threshold of the 21st century.
High performance is a norm that needs to be defended regularly and vigilantly.
On EU theory, every rational agent must use the same norm, a norm that is insensitive to global properties.
Having a norm that encourages interpersonal understanding might facilitate an awareness that Jill is acting out of defensiveness.
Finally like in MTS we will assume the existence of an expanded state space and a norm that measures movement in this expanded view.
And this global framework provides an opportunity to agree a norm that might not be politically possible at a national level in some countries.
"Nation" was what nationalists called it: Scottish nationalists, that is – the British nationalism of the rest of us was a norm that went largely unarticulated and unremarked.
The feeling of creepiness is the reaction to a norm being broken, a norm that values our individual ability to be private in public.
By getting ahead of the technology, the scientific community established a norm that is still observed by most in the U.S. and abroad.
We are reverting to a norm that existed before the social democratic decades that followed the second world war, Piketty argues powerfully – though his thesis is disputed.
Time-stability is proven using energy arguments in a norm that naturally relaxes to the standard diagonal norm when the overlap reduces to a traditional multiblock arrangement.
