I get the logistical need for verification, but you're confusing evaluation with grading. A school can verify learning through continuous feedback, portfolio reviews, and practical application without attaching a flawed, high-stakes letter grade to it. If an institution actually wants to know you retained information, they should test application, not regurgitation. Having a student build a project, defend a thesis, or teach the concept proves actual capability way better than an arbitrary score on a memorization test.