Quote from denner:
Let's just say I'm having a REALLY hard time believing the average tuition was $7800 in 2008. I'm sure it makes the numbers "work" to average in every university in the country, but it might be more realistic to average out the top 200 or 300 schools.
Private colleges and universities were charging roughly $40,000-$45,000 per year in tuition alone by 2008.
The data includes only the public colleges and universities, but it may not be much different for private. Public Institutions may have different constraints then private schools, particularly the upper echelon of well-endowed schools, which may choose to play the tuition game differently. Public institution tuition increased 44% over the ten year period ending 2008. Say private school tuition was 40K in 2008, then on average it would have been 28 K ten years earlier to be comparable. I have no data on the private schools however. The 44% increase over ten years in public universities actually lags consumer inflation over the same period by a small amount.