Mike Caulfield responded to my post on data usage to understand college textbook expenditures. The core of my argument is a critique of commonly cited College Board data. That data originating from financial aid offices leads to the conclusion that students on average either spend or budget $1,200 per year with that number rising, while there is more reliable data originating from students showing the number to be half that amount and dropping.
In Mike’s response post yesterday, he generally agreed with the observation but is concerned that “readers of that piece are likely to take away the wrong conclusion from Phil’s figures (even if Phil himself does not)”. There is a risk that people see the lower numbers and conclude the “crisis is overblown”, leading to this observation:
If we’re looking to find out if prices for some set of goods are too high, then by definition we cannot look at what people are spending as a reliable gauge, because one of the big effects of “prices too high” is that people can’t afford what they need.
If you don’t pay attention to this you get in all sorts of tautologies.
In the specific world of textbooks, Mike considers the lower-cost method of renting used textbooks, noting:
So which figure do we use here? The chances of getting everything you need as a rental are low. Sure, you could be the super-prepared student who knows how to work the system and get them *all* as rentals — but not every student can be first in line at the bookstore. And the ones at the back of the line — guess their socio-economic class and first generation status?
This is an important issue, and I appreciate Mike’s understanding that I am not arguing that college textbook pricing is an overblown crisis. I agree that the crisis is real and that the hardest-hit are likely low socio-economic class and first generation students.
But let’s move past these agreements and drop the gloves. (more…)