Comment Blue Book Test (Score 1) 160
I never really felt that any of the research papers I did 15 years ago were all that impactful in what I actually learned in college. Really all it takes for a professor to make sure students are actually learning the material is to make written, in-class tests/quizzes the majority of the grade- something like 80 - 100% of the grade. I remember many of my upper level college classes were blue book essay tests that had to be done in the span of 90 minutes and open ended diagramming, reasoning, or math problems.
That doesn't solve grading the 300+ student classes without incurring additional cost overhead of needing more grad students to grade though. I think the biggest problem is that many professors at many universities would rather not be teaching at all, so they go with the minimum required effort when it comes to evaluating theirs students.