How do you say middle school in french?

The most common and accurate way to say middle school in French is "collège".

It's important to note that:

* "Collège" refers to a specific type of school in France, similar to middle school in the US. It covers grades 6-9, roughly ages 11-15.

* There's no direct equivalent for "junior high school" in French. "Collège" encompasses that level of education.

So, if you're talking about the level of education, use "collège".