The SAT had a system to try to eliminate the guessed answers by subtraction of wrong answers.
https://sat.collegeboard.org/scores/how-sat-is-scored
+1 point for questions you get correct
-1/4 point subtracted for incorrect multiple-choice
0 points subtracted for incorrect student-produced response (math section)
0 points subtracted for questions you don’t answer
Yeah, but that system never really made guessing not worthwhile. You just needed to pick the right opportunity to guess. Every SAT prep program would teach that, if you could eliminate a certain number of choices as obviously wrong, then you should guess from the remaining, because the odds would be favorable enough to risk the penalty.