It's going to be interesting to watch how this competes with Blackboard.
Anecdotally, it definitely looks like Blackboard has an almost monopoly on class room management stuff. Since the education market is so slow to adopt new things, Google definitely has their work cut out for them.
With that being said, Blackboard definitely leaves a lot to be desired, and with classes supposedly going online more and more, the market is definitely ripe for some disruption.