Instruct: Classify Amazon reviews into positive or negative sentiment
Query: For those who have written an essay before...

For those who have written an essay before (think AP tests or SAT 2 writing or even a serious English/History paper), this book is a waste of time and money. I bought this book mainly so I could get free shipping on another book, and I wish I had just paid shipping. The essays presented here are terrible, and a similar essay would score in the 3-4 range on the GRE (out of a possible 6, and only 32% of test takers score below 4). Don't fool yourself into thinking that the essays are real or teach you anything. Save your effort and see the free downloadable files on the GRE website (gre.org) with REAL responses and criticism for each score level. Some people have said that the punctuation/grammar review is helpful, but unless you've been living in a box involving no reading of articles online or in other media, or perhaps have been speaking and writing in a language besides English, this is a waste of time.