Google Classroom
Classroom is a new tool in Google Apps for Education that helps teachers create and organize assignments quickly, provide feedback efficiently, and easily communicate with their classes. Get started by signing into your UDSD account and visiting https://classroom.google.com
Visit the EDU TRAINING CENTER for Google's Tutorials on Classroom
Additional Playlists with directions on youtube and a Google Site Collection
Google Classroom does not YET have a way to assign and collect group work. In the meantime, here is a hack you can use.
Advanced
It is easy to leverage rubrics for assessment and feedback with Google Classroom. Below is an overview.
A Workflow document for the process described above.