The fact remains that most educated people are aware of the French approach to higher education and the exacting filter applied for entrance and matriculation.

As an example, in a previous job, I noted that the new French software engineer had come from INRIA and was a graduate of a Grand ecole. The fact that this resource went on to demonstrate well above average work and domain abilities was not a surprise to me.

So note that some of us do pay attention even if it is not mentioned during recruitment.