If you want to add some truth to putting bilingual on your resume, you can contact ACTFL or the American Council on Teaching of Foreign Languages. They do proficiency testing for languages for Oral proficiency. I am not too sure about written proficiency though. Here is the website for information:
http://www.actfl.org/i4a/pages/index.cfm?pageid=3345
Being bilingual (French) is not necessarily a requirement for my position, though it should be since I am a French teacher and I am bilingual. I have two degrees in it. However I am also proficient in another language (German) as well.