This is simply not at all how it works. An ACT proves nothing as far as your capability to learn, especially when you're comparing math and football or reading and football. The ACT doesn't prove much about a person as a student, either. Back when I was taking the ACT, I scored 9 points higher than my girlfriend. Yet her college GPA was .7 points higher than mine at graduation (she also had a harder major).
How long has he been taking this test? Has to be at least a year. Granted a test like this means nothing in the long run, or in his ability to remember formations however, it contains basic building blocks for courses he will be taking as he progresses in his major. If he is serious about college then he should be well informed of the material on the test.
I'm not saying this test replicates his make-up as a person, it's just that after multiple attempts he has yet to "pass" a test as he shooting for the minimum score. An "F" more or less.