About the Author For nearly two decades, Keystone Educational Publishers (www.keystonebooks.org) has been providing SAT lessons and practice tests to private companies and schools?nationally and internationally?and to individual instructors. We have constantly committed ourselves to making the best SAT material in order to help students get the most out of their studying experience. The SAT Study Guide is a testament to the countless hours and hard work that our test researchers and curriculum creators have invested over the years. Read more
Posted by Anastasia J G
wtffff i do not understand this!
Posted by Cristian
so many fake sites. this is the first one which worked! Many thanks
Posted by John Macciva
lol it did not even take me 5 minutes at all! XD