Google Classroom is a blended learning platform for schools that aim to simplify creating, distributing and grading assignments in a paperless way. It was introduced as a feature of Google Apps for Education following its public release on August 12, 2014. Its aim is to be a paperless educational system.
On June 29, 2015, Google announced a Classroom API and a share button for websites, allowing school administrators and developers to further harness Google Classroom