@farmerman,
Leaving aside all the usual questions begged relating to the methods and motives behind the NAEP survey is it not possible that the natural resistance of youth to compulsory learning, and the conditions in which it is enforced, is a more likely explanation of the difficulties alleged if, indeed, they are difficulties at all.
Do the conclusions point to a failure in the system under which the results were obtained which no amount of educational technology can put right in the current conditions which are reasonably well described in these threads.
Is the very idea of compulsory education, an executive truth, not called into question rather that the methods used in its enforcement which are, due to the conditions operating, hardly amenable to revision other than by amateur tinkering which is forever trying to steer a dithering path between Somerville and Skinner.
My experience on A2K has satisfied me that science is not the only area which shows that the investment in compulsory education has been largely ineffective except possibly as a child-minding operation. Recent policy initiatives in the UK towards the de-bureaucratisation of education suggest that I am not alone in questioning the present system.
There are millions of people in both our countries who have developed expertise in relation to matters that were never mentioned in any curricula and which are of far greater importance that constant distractions about the origins of life and other forcefed notions which have more to do with feathering the nests of professionals than the education of the kids.