A good place to start on the IQ controversy is: HERE.
Murray, like most academic psychologists, does not believe that there is much evidence that government educational interventions beyond some reasonably adequate level can permanently boost IQ test scores. Murrays preferred policy is to forget group averages and encourage private and public institutions to treat people as individuals.
A summary of 200 academic psychologists on the Bell Curve included the accepted premises regarding IQ. You can find that: HERE.
An almost inescapable conclusion is that the Departments of Education, Political Science, and Modern Languages are the only remaining people who discount IQ and its distribution as crucial in understanding of this issue.
I asked your opinion of the theories, and said the policy implications depended upon one's opinion of the theories.
I take it that you believe IQ is immutable and that The Bell Curve is your major influence in this matter?