Students who use the Google Classroom mobile apps (iOS and Android) will soon be able to receive instant notifications when new content is added in their classrooms. Students will receive notifications of new assignments from teachers, new announcements, grades becoming available, and new comments in the Classroom stream.

The new announcements feature could help students stay on top of course content. However, it could also become just another alert on their phones that they mute or ignore.

Source: Google Apps update blog.