I'll tell you how I have used the SAT and ACT tests in our Homeschool. If we had a particularly stressful day with various ones not cooperating with me, then I would go to the library and check out the SAT or ACT practice test books. The sight of those books struck terror in the hearts of my kids. Peace was restored and cooperation regained. If you teach with the Trivium you have raised self-learners.
College becomes sometimes unnecessary.
Why pay a professor many thousands of dollars to teach you something you can easily learn on your own. Of course, if the child wants to be a doctor or go into any of the licensed medical fields then he will need to go to college. Or if his goal in life is to work for a big corporation then he will probably need a degree. What we would like to suggest, and we are only suggesting here, is that perhaps you could steer your son into making his own job. Building his own business.