* It's not a proper noun: "French" is an adjective describing the language and culture of France. It's not a specific person, place, or thing, so it doesn't need to be capitalized.
Examples:
* I'm taking a French class.
* I'm learning to speak French.
* My teacher is from France.
When to capitalize:
* You would capitalize "French" if it were part of a proper noun, like a specific course title: "Advanced French Literature."
* You would capitalize "French" when referring to a specific person or group: "The French people."
Let me know if you have any more questions!