<p>As discussed (rather extensively and accurately IMO) in the comments, there isn't much more that we can do.  I think our homework <a href="https://stats.stackexchange.com/tags/self-study/info">policies</a> are good ones.  We just have to be vigilant.  (For example, on a recent SS Q, a new user gave an <a href="https://stats.stackexchange.com/a/138777/7290">answer</a> that I thought was possibly too complete and I left him a quick note, but a more experienced user gave a good SS <a href="https://stats.stackexchange.com/a/138797/7290">answer</a> later.)  </p>

<p>Beyond vigilance, we need to be unafraid of closing such questions.  It is best that such questions always get a comment to help them use the site more productively (for both us and them), and that will help cue potential answerers to the fact that full answers should not be given.  If a user repeatedly asks questions that violate our policy, downvotes and closevotes, coupled with more strongly worded comments, is the best we can do.  </p>
