Each SAT contains 49 writing questions and an essay question. The writing questions test your knowledge of a relatively small number of grammar rules. We are currently working on an Essential Guide to SAT Writing Rules. For now, we have posted a PDF file that contains practice exercises for 12 key grammar rules. The essay question asks you to write a 25-minute response to a prompt. We are currently working on an Essential Guide the SAT Essay. The guide will draw upon our unequalled collection over 100 Level 12 SAT essays. So stay tuned to Insider Test Prep!