Here you specified the encoding used in your document.
> <p>L'élève va à l'école et ceci est écrit en Français!</p>
Here some actual French text.
1. Do you see question marks when you look at the document locally on
your computer with the browser? (open file… with the browser)
If the document is fine locally, it means you have the right
If not, your document is maybe written with another encoding.
2. Now when you put your document online, it has been written with
one encoding, you have to be careful that the server sends the right
information with your document.
If you do not have control on the server configuration but have
access to PHP, you can fix the HTTP headers for this file.