[SiVal]

There is great political pressure in most countries to "improve" the education of the population. This runs into other political, demographic, and scientific realities and produces some ironic consequences. For example, in the US, we have a higher and higher percentage of the population entering college each year. That means that the average IQ of those entering college gradually declines. (It wouldn't if the Flynn Effect still functioned, but gains from the Flynn Effect in the US ended 20-30 years ago.) The top 10% has a higher average IQ than the top 20%, which is itself greater than for the top 30%, etc. The higher the percentage going to college, the lower the average IQ of college students, and the colleges have to adjust to avoid an embarrassing rise in drop-out rates.

I saw statistics a week or so ago showing a gradual rise in the percentage of students who take calculus in high school, a gradual rise in the percentage who take Algebra 1 in eighth grade (instead of in 9th, 10th, etc.), and other stats that would seem to imply a gradual increase in math ability for any given age cohort. Yet, within a day or two, I also saw stats showing a gradual decrease in math ability for high school graduates entering college. In 1995, the College Board could no longer continue with the old SAT and had to "renormalize" it to get the mean score back up to 500. They had to dumb it down, in other words.

I've seen stats and reports from other countries (including Japan) that show the same trends. People demand that the schools do a better job of getting kids ready for college by, for example, having more of them take algebra in 8th grade. So, it happens, except that they aren't really any better prepared than before, so to prevent the embarrassment of rising failure rates, the course has to be dumbed down. The apparent increase in math ability is achieved by a relabeling of what they do, not by an increase in how much they learn. There is now a growing trend in Illinois for students (I assume from Chicago) to take calculus in high school and then end up in remedial math in college. They're not learning anything, but for political reasons they are given classes labeled "calculus" to show "progress toward social justice". I assume Illinois is representative of many other places in many countries.

[jonnathanson]

This is spot on, and in theory, it's why standardized testing was implemented in the first place: to get at normative ways to compare knowledge in a given subject across schools and learning environments. It was social engineering, really: by convincing schools that their students would be held accountable to universal standards, those schools would in turn up their games and make sure students were learning the real deal.

Of course, what actually happened was twofold:

1. "Teaching to the test," i.e., narrowing a broad subject area like Calculus down to whatever aspects would be covered on a standardized AP exam.

2. Following from the above, a reduction in foundational and principle education in favor of problem-based education. Kids would learn the what of the formulas, but not the why. Kids could calculate a derivative, but they couldn't tell you what it meant or why they would ever need to do so.

The result? A vicious cycle. Subjects narrowed and became divorced from their foundational purposes, which accordingly made them more about rote than about thinking, which made them less engaging subjects, which in turn discouraged student interest, which in turn led to declining scores. And the cycle repeated itself.