Google Classroom allows you to create a 'centralized' online environment where you students can access all of your course resources, announcements, assignments and lessons.
One of the best features is the ability to have 'instant' access to your students documents for providing formative and guiding feedback in real time. It also allows for a 'one stop shopping' experience for students to know where to go for everything they need access to when they need it.
Learn what classroom 'is', how to set up and fully utilize the classroom in conjunction with all the other Google Tools that make a paperless classroom easy and effective to manage.
The key is to not look at Classroom as a replacement or stand~alone product. Is is a workflow solution and a great way to easily utilize all of the tools in Google's 'treasure trove of opportunity!'