If you are using Google Chrome and you are in the Gradebook page, you cannot use CTRL-F (CMD-F) to find a student on the page if their name is not currently showing. This is a Canvas bug. It works fine on all other web sites I've tested. I know you can use Canvas Gradebook search to find the student, but then you are limited to seeing only that one student. It would be nice if Canvas simply supported CTRL-F (Google Chrome search in page) even for words that are not currently visible because they are too far down the page.