CASAS has a research brief posted on its website which shows the 
correlation of CASAS assessment scores and GED exam scores and GED 
certificate awards.  On the left-hand frame (blue) click on "Research 
and Reports".  A submenu appears and you click on "National Reports".  A 
sub-submenu appears and the top item is "CASAS/ GED2002."  My program 
uses this information to inform discussions with learners, instructors, 
and program partners (such as Dept of Labor and Training counselors) 
about further instruction, assessment -- including GED Official Practice 
Testing -- and GED test center referrals.