They also fail to mention that the 2003 report showed no decline except for Hispanics. Maybe, just maybe, immigration by people with non-English backgrounds was the cause, not textbooks? It'd be nice to at least see that discussed.
Which ignored the part immediately before that citing an 8 point rise in quantitative literacy between '92 and '03.
Also blatantly ignored the following sentence showing +6 for prose and +8 for document literacy for POC. And the one about Asian/Pacific Islanders getting +16 from '92 to '03.
It is a shoddy piece of work picking only those points that bolster their existing conclusion.
Would you consider them an unbiased source given their stated goal is to "support Christian educators by producing textbooks and materials that shape a biblical worldview"?
Actually, upon reading the whole article, this feels a lot more like the same millennium-old whining "kids aren't appreciating the same classics I did and therefore they're stupid idiots." Kids these days read and write a lot--text messaging, twitter, facebook, social media.
If you want to convince someone that it really is the case that people are getting dumber, you need to find references that don't read like the same age-old complaints: you need to show that it's dumber on an objective measure of intelligence, not "they don't show appreciation for the classics," which is what you usually find instead.