Agreed. Frankly test taking doesn't correlate to job performance well by any metric.
For example, get 90% on a test, that's applauded and earns a distinction. In a job context, 90% gets you fired. I don't want a worker who produces "90% well soldered boards". I don't want software that runs on "90% of our customers computers". Or a bug in every 10 lines of released code.
A test puts an arbitrary time limit on a task. In the real world time is seldom the goal. Correctness is more important. (Well, the mechanic was going to put all the wheel nuts on, but he ran out of time.)
College tests are largely a test of memory, not knowledge or understanding. "List the 7 layers of OSI in order." In the real world you can just Google it. Testing understanding is much harder to mark though, Testing memory is easy to set, easy to mark.
Some courses are moving away from timed tests, and more towards assignments through the year. That's a better measure (but alas also easier to cheat. )