50 -&gt; ~10 students standing was my experience with laci&#x27;s algorithms class.  He&#x27;s still an excellent instructor, though.  Willingness to do hours of background and follow-up reading outside of class was a requirement if you wanted to get a deep understanding of the material, and it pays off well.  (He was very approachable though, not at all the research professor stereotype.)<p>(HatLab, what a small world... :)