If the rate of success of late doesn't decrease soon, which it very well could, I may call the test "acceptable, for now." Though I may want to change question five, since it's become a bit like part of 2/3.
I asked my ISFP dad to take it, and he scored ISTP, which I'm relatively certain is due to his wanting to sound intelligent. He does that. He also drinks Obama Kool-Aid.