I recently discovered DeltaMath has this feature.  I really really really wish KA could provide it as well.  I love everything about KA except that I have to do the data entry to get my students' scores into GC.  Do you know what I'm talking about?  You will get a LOT more teachers on your website if you can make it happen.  Let me know if you need help!  Grant Hueth.  grant_hueth@hotmail.com