Jantzi Test Prep has been successfully preparing students for the SAT since 1987. Because we are so confident we can raise your child’s scores, we offer a full money-back guarantee if their performance doesn’t improve. Give us a call — we’d love to talk to you about the course! History Established in 1987. Tim Jantzi began tutoring students for the SAT around his kitchen table in 1987. He eventually developed his proven, effective strategies into a classroom-style course called “Strategies for Success.” Since that date, Jantzi Test Prep has expanded throughout the U.S. and has helped over 50,000 students improve their standardized test scores.