Andover College Prep 151 Railroad Ave, Greenwich, CT06830 Andover College Prep offers test prep and college admissions counseling to the Greenwich and Fairfield County…More communities. Their 50+ hour SAT course is guaranteed to increase students' scores by 250+ points, and their ACT course is guaranteed to improve scores by 7+ points. Students who don't see these results are allowed to take the program again for free. In addition to small classes, Andover College Prep offers private tutoring, a summer travel SAT program, and a total management program in which students are assigned an academic manager to oversee their studying and college application process for the year. For more information, please visit their website.