Additional tools available in the Google EDU Marketplace to enhance implementation:Add-ons to GoogleApps to support portfolio development: Teacher Dashboard, Aviary, OpenClass, others
Teacher Dashboard - a paid comprehensive add-on to Google Apps to provide overall control of student Google Apps documents.
Google's 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." Classroom is only available for Google Apps for Education users at this time.
Doctopus - a free Google Script to add on to a Google Drive Spreadsheet that shares documents with students and notifies teachers when a student has made changes.
Goobric - a free add-on Google Script to Doctopus that adds assessment rubrics to an assignment (requires an extension to Chrome web browser).
Aviary
OpenClass