Please refer to steps below to use Google classroom with myViewboard classroom

Please go to myViewBoard classroom Settings => cloud integration to bind google classroom with it in the same settings window, click the arrow button to expand Google Classroom then you will find google classroom of this account listed in it Select google classorom classroom the student list of this google classroom will import to myViewBoard student list automatically, the URL of myViewBoard classroom will also share to google when the class is finshed, you will find there is one additional option "Export to Google classroom" been added in "Save as"

Feel free to let us know if you have any futher questions, thank you,