Iām a school teacher. In a smaller setting (such as not having 100s of students in a lecture hall) I donāt need tests to know where my students are academically and if theyāre capable of moving on. It helps, but itās genuinely overrated. The main purpose it serves is putting an actual number/letter that corresponds to their level of understanding that they and everyone else has access to. I donāt need number/letter grades to know which students are excelling, which ones are average, which ones are lower performing, which ones need extra help now and possibly at the next level, and which ones need to be held back. The grades are realistically for everyone but me; so they can see what Iām seeing without being there every day and so my opinions are justified. There have been a few students whoāve surprised me with their test grades, good and bad, but theyāre the exception. And after a test or two, thereās really no surprises anymore.