Just wanted to share an extension that may come in handy for you. It's called "Alice Keeler Gradebook Split". Basically, it's a tool that will divide your chrome browser into two evenly split screens. This would come in handy to eliminate going back and forth from tab-to-tab. Instead, two tabs can be open simultaneously, side-by-side. It doesn't have to be a "gradebook" ~ Any tabs/sites will work, so the possibilities are endless. You can drag tabs from one side to the other as well.
Students can use Keeler's "Classroom Split" for Chrome in the same way. Rather than going back and forth between tabs, they can click the extension and have both tabs open. This would help with assignments in Google Classroom that they're often toggling between tabs with.
As always, Take or Toss! Let us know if you want to explore together.