Working out exactly what students and taxpayers get for the money they spend on universities is not a tricky business, as you surprisingly claim (“Measuring Mortarboards,” November 17, 2007). All you need is to measure the graduates’ income. To compare universities across countries and continents, you should express incomes at purchasing power parity. Voila! That is all the Organization for Economic Cooperation and Development ought to do, now that it has undertaken this worthy task. Both students and taxpayers will get the message in a jiffy. A mighty newspaper like yours should have come up with it even faster.