Do you think tests in academics actually work to help instill the knowledge you’re learning, or not?

In most academic settings, test scores are prioritized. They tell an administration how well a teacher is doing, they keep students working within that system but as many of us get older I don’t think we retain as much information as we learned in high school. I remember doing well on tests but I don’t remember what was on the tests.
No, test-taking doesn’t help you retain what you learn
Yes, it does help you retain what you learn
Testing has its merits but ultimately the way academia currently functions is a flawed system that doesn’t actually encourage learning, just memorization
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Do you think tests in academics actually work to help instill the knowledge you’re learning, or not?
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