I spoke to an American who is a professor at the Sorbonne. I jokingly asked if he was the first English speaking professor at the Sorbonne. The answer was yes, but that these days many graduate departments are taught in English.
I gave a lecture at the Lyon School of
Management, decades ago, and it was d'rigour for graduates in
management to speak English.
Turns out many fields are solely English. My professor friend teaches international law. He reports that all EU business is actually conducted in English.
My friend further reports that the English issue was one of the concerns in the French rejection of the EU constitution. Nine of the ten new EU countries have English as their second language (Romania is the exception). The French don't like that. Moreover, the ten new EU democracies are all pro-commerce and anti-Socialist/welfare state.