One of the biggest job markets for students nowadays involves ESL teaching in foreign countries. The idea is quite appealing: free travel, cash and a chance to educate the rest of the world. In reality, the bigger picture shows they are participating in a global conquest for perfecting Standard English.
Indeed, in many countries, the more English you know, the better off you'll be. It's a pity many kids don't even respect their mother tongue anymore and only aim to learn the more "useful" English.