3. Use spelling and grammar checkers. We've become spoiled by these clever devices, which not only tell us when we've made a mistake, but offer to fix it for us. Use these tools to identify when you've made an error of some sort, but take serious note of how to go about fixing it. These convenient checkers won't be available to you on test day, so learn how to handle spelling and grammar on your own. Keep in mind, however, that not all spelling and grammar checkers are without fault. If the information yours provides seems incorrect, be sure to research the proper way to handle the situation.