The quiz tool is powered by Google Spreadsheets. Editors use a Google Spreadsheet Template to input the content of the quiz. For each question, they enter the question text, four choices, an optional question description, the correct answer, incorrect message, correct message and a hint. Once the editor is done, they publish the spreadsheet to the web and grab its public URL.
When you're ready to publish, copy the embed code generated by the authoring tool and paste it into the HTML view of an article page in Chorus.
Update the spreadsheet accordingly, then recopy and paste the spreadsheet's public URL into the generator. Click 'Generate Your Quiz' again to get your new embed code. Copy and paste the embed code into Chorus as described above.*
In order to make the tool more reliable, Quiz Quartet pulls in the quiz data from the Google Spreadsheet and attaches it in the embed code. This means that the quiz code will need to be regenerated every time changes are made, however the quiz will be more stable in that it does not rely as heavily on communicating with Google Spreadsheets every time it loads.
http://www.theverge.com/admin/verge_hub_posts/preview/5765288