[raptor99]

Right on.

If the goal is to fix student grades instead of just documenting it, the points counted off need to escalate with repeated incorrect answers. The first incorrect answer can be treated as an honest mistake. But when the third or fourth quiz still shows the same incorrect answers, the grade shouldn't be the same C; it should decline sharply. At some point the cost of ignoring the problem has to exceed the points from letting it continue.

You just solved education!