I don’t know, I had quite a few white students in the class I taught (see above) and they were pretty darn dumb. Maybe it’s not right to call them dumb because certainly next to NOTHING was expected of them. They were there to get college degrees and they were paying for it - it was almost an offense to ask any of them to do any actual real studying.
Look, while it's true that the modern world has manifestly deleterious effects on human learning [no kid is ever going to reach his full intellectual potential if he plays Grand Theft Auto for 10 or 12 hours every day], it's also true that 100 is only the average IQ for Caucasians.
Half of all Caucasians have IQs in the 90's, 80's, and below, and the educational situtation for them is pretty hopeless.
Again, though, the really catastrophic fact we are facing is that, because American Blacks and Aboriginal/Mestizo Hispanics have average IQs down around 85, half of them are even stupider than that - half of all American Blacks and Aboriginal/Mestizo Hispanics have IQs in the low 80's, the 70's, the 60's, and beyond [down into the 50's & the 40's, to the extent that numbers like "IQ 50" even have any meaning].