At the moment, we don't recommend using student progress to assess grades for Courses 1-4. Progress is just not a great way of understanding what students learn. For this reason, we don't have a data export.
We are working on a better system, but in the meantime, it might be a better idea to give students a quiz to see if they can pick out the right block for a given situation. This will give you far more information about how well students are understanding the concepts, and won't put students will missed CS days at risk of coming off as uneducated.