To be used in tandem with the Doctopus Add-on for Google Sheets, the Goobric web app enables flexible, efficient rubric-based grading of Google Drive resources (Documents, Presentations, Spreadsheets, Folders, etc.)  Doctopus is a popular assignment distribution and management tool available from any Google Sheet from the Add-ons menu->just search the Add-ons store for "Doctopus."

The Goobric web app provides teachers a handy assessment toolbar -- in the same browser tab as the Google Drive assignment being evaluated! -- that includes a clickable scoring tool tied to any grid-style rubric, comments, and audio-comments recording.  Submitted scores can be auto-emailed to students, pasted into the bottom of a Google Document, and are automatically transferred to the Google Sheet that holds your assignment roster.  Includes "Back" and "Next" buttons that allow teachers to efficiently advance through a batch of student assignments, all without leaving the same browser tab.