This study aims to provide a comparative look at Turkish and American high school graduates’ academic achievement at college by using High School grade point average (HSGPA), Scholastic Aptitude Test (SAT), American College Testing Assessment (ACT), and Student Selection Examination (OSS). The questions addressed were: 1-Are high school GPA or standardized test scores such as SAT and ACT better predictor of academic achievement of American students at college? 2-Is high school GPA or standardized test scores such as OSS better predictor of academic achievement of Turkish students at college? To answer this question, the author conducted interviews with four Turkish and four American college students. In addition, he employed secondary data from previous research on the issue.