<p>Are medical school admissions officers impressed by a college sophomore taking a graduate-level science course; is it looked upon favorably or is it something they will just note?</p>
<p>Generally they don't have time to look that closely at your app. Do it for your own interest.</p>
<p>BTW: Graduate courses are generally regarded as easy and grade inflated. Grad students are focused on their research and less so on coursework. I personally don't think it's harder to do well in a 600-level grad course than a 400-level upper div course or a 100-level intro course.</p>
<p>A tiny factor, but not zero. Worth much less than the penalty for screwing it up. At some point you will have to take advanced coursework.</p>
<p>How hard the course might be can range all over the place. In fields like math, hard science, and engineering, graduate courses might assume a deep background that few undergrads possess. Thus, you could run the risk of cruising along until you discover that the instructor is speaking some obscure dialect of Greek, while everyone else understands what is going on.</p>
<p>Med schools are unlikely to notice or care. If the course helps you do something interesting in your undergrad years, like a successful research project, then it could matter. Otherwise, it will probably be viewed as just another course.</p>