Assessment Test GPA Scatter: Add options to identify students by service and demographic and choose course specific grade rather than GPA

This came from Pete Bylsma at a workshop. 

In the Assessment Test GPA Scatter extract, it would be very helpful to have the option to add filters for Services and Demographic information. These could be identified by specific color dots in the display. This enables the user to make some more accurate inferences about the information in the chart and identify trends based on more specific factors.

Adding to the chart's usefulness would be the options to choose a specific subject area/ Course Grade rather than the whole GPA. As a user, you could then see whether students grade in a specific class correlated to their performance on the assessment, and how closely. That level of information is more helpful. The new filter criteria might look like below: 

Generating a view that might look like this: