Charles Bibilos

Charles Bibilos is one of the world’s most accomplished independent GMAT instructors, with over 20 years of experience helping students master standardized tests and gain admission to elite MBA programs. A graduate of Stanford University with a perfect GMAT score (800), Charles specializes in working with students who have struggled with traditional prep methods, offering a personalized and effective approach to test-taking. In addition to his GMAT and GRE expertise, Charles has guided applicants to top business schools including Stanford, Harvard, Wharton, and INSEAD, and is also a published author of TOEFL prep books. Known for his charismatic teaching style and deep subject knowledge, Charles brings clarity, energy, and empathy to every session.