So of course Ploy can speak English, right? Maybe, maybe not. If Ploy is a good student, and she puts in the effort to learn, and she has had even halfway decent teachers, she probably can speak English. But if she doesn't see the need to learn, isn't motivated, and she has had mediocre teachers, she has probably been tuning out of English class for the past ten years the same way her Pratom homeroom teachers have been doing for the past thirty.