Key to High Scores on Standardized Tests is based on the logic used in test development. Test compilers use pools of questions, each of which is based on a different principle of logic. Each chapter starts with questions based on the simplest principles and builds up to the most difficult, which makes this text an enjoyable challenge. After a sample question, the relevant principle of logic is introduced, and this is followed by practice questions. Students using this text to prepare for the ACT, SAT, GRE, LSAT, and other standardized tests say it is more useful than courses that cost hundred of dollars. Unlike courses that cover test taking skills, this text also covers the actual intellectual skills that the standardized tests cover.