The Obama administration seems obsessed with making American taxpayers eat toxic assets. And I’m not talking about bad paper, derivatives, or any other inscrutable financial stinkers. I’m talking about good ol’ American public schooling.

Truth be told, after listening to the president’s presser last night, even I started to think that the key to American economic success is “investing” in education. After all, once you’ve heard something for about the twentieth time, you start to believe it. I mean, that’s how propaganda works, right? But somehow my mind refused to give in, and it forced me to remember:

We’ve been “investing” in government schools for decades, and have been reaping nothing but AIG-like results!

I actually laid out the startlingly awful returns we’ve gotten for our education dollars in several blog entries last month, but thought I’d revisit the basic, revolting facts one more time. I want it to be absolutely clear that lavishing more money on education isn’t change, nor, given what we get for the money, could it possibly be the key to long-term economic success.

So what have we invested? Let’s start with total outlays for elementary through post-secondary education, taken from table 26 of the latest Digest of Education Statistics. In 1969 we spent a total of $347 billion in inflation-adjusted dollars. In 2007, we spent $981 billion, a 183 percent increase.

How about public k‑12 spending on a per-pupil basis? Again using Digest data (table 181) – which understates total expenditures by excluding such things as “state administration expenditures” – we can see that we’ve been spending increasingly sizable amounts. After adjusting for inflation, in 1969 we spent $5,161 per child. By 2005, that number had more than doubled, hitting $11,643. And what has that “investment” yielded?

Other than massive bloat, bupkus! Looking at National Assessment of Educational Progress long-term trend scores for 17-year-olds – essentially, our schools’ final products – we see almost complete academic stagnation. In mathematics, the average scale score was 304 (out of 500) in 1973, and only a measly 3 points higher in 2004! That’s a one percent increase in math outcomes for a roughly 100 percent increase in funding! And that actually beats the “return” in reading, where 17-year-olds were at 285 in 1971 and, yup, 285 in 2004!

How about higher education? Here we don’t have very good outcome measures and it is difficult to break down overall per-pupil expenditures. What we do have, however, suggests another bad investment.

To get a feel for expenditures, we can examine the State Higher Education Executive Officers report (figure A) showing that total revenue collected per full-time-equivalent student at public institutions, adjusted for inflation, grew from $8,463 in 1983 to $11,037 in 2008, a 30 percent increase. We can also look at aid per student, most of which came through government. According to data from the College Board (table 3), in 1983 the average full-time-equivalent student received $3,769 in inflation-adjusted aid. In 2007 she got $10,392, a 176 percent increase.

What are the returns on these investments? Again, lots of bloat, but from what we can tell, relatively little of educational value. Graduation rates, for one thing, seem to be falling.

According to the Population Studies Center, within eight years of graduating high school, 51.1 percent of students in the high school class of 1972 had finished college degrees. In contrast, only 45.3 percent of 1992’s high school class had done the same. And grads seem to be getting less well educated; according to the National Assessment of Adult Literacy, between 1992 and 2003 literacy levels dropped for both Americans whose education maxed out at a bachelor’s degree and those with graduate degrees. Whether it was graduates’ ability to read prose, documents, or handle math, scores went down while costs went up.

So all told, what do we have to show for our education investment? Pretty much just empty bank accounts. And yet, some politicians just can’t seem to get enough of those toxic assets!