These people are asking the wrong questions. IQ is a measure of potential or capability, not achievement.
When schools don't successfully teach reading anymore, forget grades above the 3rd - no kid with any potential will make it without reading skills. It is all just a colossal waste of time.
Let's not even get into the introduction of calculators at 3rd grade.
There are curriculums that have proven themselves over thousands of years - like phonics - yet our schools refuse to use them in the face of all research pointing to success.
Our kids are dumber in terms of skills than any generation prior - yet we still say IQs are rising in the population as a whole.
Forget the IQ crap - people with IQs under 70 have learned to read with phonics - yet we cripple kids with IQs of 140 with the whole word method.
When researchers start pointing out stark truths about curriculums, then I'll care about IQ.
You can't eat off your IQ; only skills will get you a decent income.
Good citizens is what our educational system was set up to produce....
that does not mean we need everyone to be an engineer, a pilot, a doctor or a lawyer.... it means having parents know a thing or two about child raising....that doesn't take a genius.....
we need people to be able to read a voter's pamphlet and understand what they are voting for.....
so ...a job to earn money....know how to raise children...know how to vote.....
in all these cases, the schools have done very poorly.....