I wrote yesterday about my decision to try learning names of my students on the first day.
As of the middle of week two, I've learned the names of every student within each class with few exceptions. In some of the bigger groups, I mix one or two names that start with the same first letter, but I correct myself pretty quickly. I've come to recognize some individual traits that make each student unique within the group, and am feeling comfortable building on my knowledge of their names to find out more about who they are.
In the hallways, in line for lunch, and walking around campus, I struggle. Outside of the classroom, I lack the context of those names that I can usually lean back upon to remember them. With the students all mixed up together, including with students that I don't have in my classes, it takes longer to put a name with the face. As I develop an understanding of the students beyond names, this struggle will go away.
The analogy to learning in any classroom context stands on its own, so I won't ruin it with more commentary.