Regarding the drop in scores on the state’s redesigned MCAS tests: Elementary students are scoring lower on tests because they are taken on a computer. This is especially true for third-graders on the essay portion, where we measure two things at once — their ability to compose and their ability to type. I’ve seen students with three or four paragraphs written on their scrap paper run out of time trying to type on the computer. What does the test truly measure?