I honestly don't see why learning a second language is important, really. Most people with the careers they want/get doesn't even need another language than their native language, and besides, the method of teaching students languages is horrible and (pulling this estimate out of my ass) about 80% of people or so actually never remember how to speak the language taught. Babies never had to take tests or get homework to learn their first language, why do we do it?
Because each class needs a grade, of course.
If people want to learn it make it an elective or something.