How do you say i am in year 9 french?

There are a couple of ways to say "I am in year 9" in French, depending on the context and level of formality:

Formal:

* Je suis en classe de quatrième. (This is the most literal translation and is commonly used in school settings.)

Informal:

* Je suis en 4ème. (This is a shortened version of the formal phrase and is more commonly used among friends and peers.)

* Je suis en neuvième. (This is a less common option, but it can be used if you want to emphasize the numerical year.)

You can also use the phrase "Je suis en troisième cycle du collège" which means "I am in the third cycle of secondary school" if you want to refer to the broader context of being in year 9.

The best option will depend on the specific situation and your level of comfort with French.