Christopher Black, MA, is the founder and director of College Hill Coaching and creator of the College Hill Method for developing reasoning skills. He has been a consultant to some of the nation's leading educational publishers and software developers and is the coauthor of McGraw-Hill Education : 6 SAT Practice Tests, 4th ed. Mark Anestis, MA, is a founder and director of The Learning Edge and coauthor of McGraw-Hill Education : 6 SAT Practice Tests, 4th ed., and author of 5 Steps to a 5 : AP Biology.