How do you say year 11 in french?

There are a couple of ways to say "year 11" in French, depending on the context:

Formal:

* Première année de Terminale: This is the most formal way to say "year 11" and refers to the first year of the "Terminale" level in the French high school system.

Informal:

* Terminale 1ère: This is a more informal way to say "year 11" and literally translates to "Terminal 1st".

Note: The French high school system is different from the US system. In France, the "Terminale" level is the last year of high school, equivalent to grades 11 and 12 in the US. Therefore, "Terminale 1ère" refers to the first year of this final level, which is equivalent to grade 11 in the US.

It's important to choose the appropriate term based on the context and your audience.