Some of these Category IV recruits make very good soldiers. But the problem is that the others from Cat IV tend to fail at high rates. This costs a lot of money, and has a whole ripple-effect of problems and grief.
I wish the Army could avoid these recruits, like the Air Force, Navy and Coast Guard (and the Marines, too, for the most part).
Many of us who went into the military during WW II would most likely have flunked the tests given today primarily because many of us never went to high school. But we made pretty good soldiers and sailors and afterward many of us through the GI Bill went on to higher education. So it wasn't so much not being intelligent as being educationally deprived. I eventually attained a doctorate although I still have never gone to high school.
My point is I think they are worth a try, who knows what will make a great soldier, hell kerry was the brightest and look what he did!