@OG, in Chrome, I use a tab group for each of my classes, as well as tab groups for major topics I'm currently planning or teaching, and a tab group with administrative pages. Having the groups means less clicking around trying to (remember and) get ...
Chiming in to say that I, too, would really appreciate tab grouping. Chrome can even save tab groups, so that I can put all of the tabs I need to work on Project A in a group and then close the group when I need to move on to something else, freeing ...