I am sorry if this has been asked, but I was not able to see it anywhere. I realize KHAN academy is Common Core. My State is TEKS. If I use Khan Academy as an intervention program for my students, I cannot use the mission feature because it is aligned to common core. So I have to assign the lessons? There is not a way for them to take a pretest, and see where they need the work, and then follow a path designed by Khan academy?