Three ways to use Google Drive in your classroom
1. Have your class set up a form to create a survey of some sort. Within the Google Doc form, click Create, then Form. It will then take you through some steps to set up your form. Once that is done, share it and your class could then collect the data from the survey and create a spreadsheet of the responses.
2. Another way is sharing ideas with others. Create a spreadsheet and have co-workers fill in the spreadsheet with their responses/ideas. As I have done for this course, I created a spreadsheet for this particular "Thing 20" so all course participants could fill-in the form and we would then have a sharing of some great first week ideas of integrating a Web 2.0 Tool the first week of school. Here is a link to that document.
3. Sharing a file with another person. Because the file is editable and each of the "shared" participants can add to the file it is immediately updated. This would be great for sharing resources for a topic of study.
However you use Google Drive, I am sure it will make your life even more efficient.