Undeniably Slow or Lazy?

When ever I am challenged by something or someone, I would make sure that I won't make the mistake the 2nd time. I don't know if it's the present generation or me, but there's this class of mine who seem not too interested in passing the subject. I gave them a practical exam today and their scores were uhm, undesireable. Take note, these are a series of tests, only a few minutes apart. They consistently getting the same score, very few improvements. I wish them lots of luck though, because by the looks of it, most of them aren't going to make it.