Ultimately, Sosua will need to track interactions with a user on pages and sequences. However, in the short term, we can grade a page assigned based on view/no view, and a sequence on reaching the end or how far along.
IMS has done some design work to formalize the SCORM data persistance at:
http://www.imsglobal.org/ssp/sspv1p0/imsssp_prflv1p0.html