To add students, follow these steps. Use the pictures as a reference.
Choose the students button in the middle of the other two.
2. That should bring you to a page that looks like the following:
3. From here, you have to options:
You can click on the invite button and invite students to your specific class. This can be a bit tedious. You can within the box that opens when you click invite search for the last two digits of their graduating year. This will narrow it down a bit.
You can have the students use the provided code to join your class. Have the students go to the site: http://classroom.google.com, click on the plus button (they may have to indicate they are students first), choose join class, and have them type in the code.