Students are given login information at the beginning of the year to be able to access my Google Classroom. Google Classrooms is my way to post assignments, classroom materials, and any other pertinent information I need to communicate to the students. Though it is not the only method I use to communicate it is the primary way I use to communicate with students. It is completely safe and people can only join the Google Classroom if they have the classroom code.
Click the video below so that you can have an idea of what Google Classrooms is like.