It is important to abide by all FERPA requirements in the capture and use of student private data.  The College Knowledge Challenge encourages all legal use of that data to provide real value to students and parents in managing progress toward college.  The Gates Foundation is also offering the opportunity to link to the Shared Learning Collaborative (SLC) to make it easier to manage and share student data.  For information on how to make your app SLC compatible, please see http://dev.slcedu.org.