They found a strong "mode effect" in numerous grade-subject combinations: Baltimore County middle-grades students who took the paper-based version of the PARCC English/language arts exam, for example, scored almost 14 points higher than students who had equivalent demographic and academic backgrounds but took the computer-based test.
This was mentioned here in Worcester more than once, and I've heard from other districts in Massachusetts that it was noted there, as well. As a result, many chose to conduct all PARCC assessments on paper this coming year, even if (as in Worcester) they have the capacity to do it online. I have yet to hear any remedy coming from the Department regarding last year's scores, however:
As I heard more than one person mention yesterday: it will be interesting to see what the Mass Board of Ed makes of this, particularly with the Department's push to conduct all assessments online by 2019.