Something like that. You'd have to plot all of the text in all the right places, and also script the menu, delay, and keyboard response.

Are exam proctors really auditing this to that level? I've been out of school for a while, but I think I only remember the honor system being used.

My calculator was never checked before standardized tests, but some math teachers checked before giving class tests.

Theres some interesting incentives for teachers administering standardized tests to ignore cheating. Students who do well reflects well on the teacher and the school. I wonder how schools report cheating to standardized test administrators and what the rules are for scoring a cheater.