I recognize completely that there are significant challenges and hesitations to implementing Google Classroom as a learning management tool in the realm of early elementary school. My hope is that this year, I can support teachers in trying new and innovative ways to deliver rich digital content to their students through the Chromebook centers in their classrooms. Google Classroom, if set up the right way, has the potential for being an excellent "landing page" for your students when they log into the Chromebook.
Below, I've found a few blog posts/articles on how Google Classroom can be used in a 1:many or early elementary education environment. I look forward to working on this with you this year!
Alice Keeler: Google Classroom with multi-user devices
Lasota's Little Learners: Google Classroom in First Grade
How Google Classroom Transformed an Elementary Classroom (slideshow)
P21: Blended Learning in First Grade