To differentiate between Normal assignments and quizzes :
Quizzes is usually considered as Tests , so the model answers not to be shared with students on submission , to prevent any cheating
For assessments and inclass activities , it will not be a problem , as it is considered as a daily tasks
More details :
When the teacher create a quiz ( test) for their students , and publish it
Students open the quiz and start it and submit it
On submission students can see all their scores with the correct model answers
Point three is a weak point on the Winjigo Quizzes , as for different tests , teachers will not prefare to use Winjigo , as students can easily cheats the correct model answers from their colleges
We can give the teachers option to hide the correct model answers on students submission , or to enhance this option on the product