Earlier quoted context omitted.
One thing it means is that they’re administering the test, not a school board. That may be relevant or ripe for abuse.
It would seem to be in their self interest to not skew the test results. The military has done a lot of research on their testing. A soldier that is too incompetent is a danger to his/her comrades. Previous attempts to recruit soldiers with too low of an IQ was a disaster. More danger than help. I don’t really see how they would he less trustworthy than a school board. Especially considering the stakes.
Where there is a need for personnel, there is some incentive to accept people who might not be ideal, but they are going to approach that in the most sane way possible.