It's quite possible to write tests that fairly accurately measure the basic material to be taught in the third grade. Well written tests cannot be 'gamed' to a

It's quite possible to write tests that fairly accurately measure the basic material to be taught in the third grade. Well written tests cannot be 'gamed' to any significant degree. People have known how to write good tests for over 50 years and have often done so. Heck, when I was teaching in college, I passed out copies of tests from earlier semesters. Then the students could study just to the tests and try to 'game' them. Still, had to know the material at least to some degree to do even that. Net, the students had every opportunity to study just to the tests and I was in effect teaching just to my own tests and still the students had basically to learn the material.