Charles Bibilos, founder of GMAT Ninja, is one of the world's most accomplished test-prep instructors, with over 15 years of experience as a tutor, classroom teacher, and textbook author. Charles has earned perfect scores on the GMAT, GRE, and ACT, and he holds a B.A. from Stanford University and an M.A. in Education from the University of Colorado. Charles and his partners offer personalized test-prep instruction with no frills and no gimmicks: we'll teach you to work hard - and work smart - to achieve your GMAT, GRE, and MBA admissions goals.
Website: gmatninja.com
Phone: (202) 489-2731
Closed now
- Thu 9:00 AM - 5:00 PM
Denver, CO 80211 ·1378.69 mi
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Reviews
yelpLike most students, I first discovered GMAT Ninja through their YouTube channel. With a ton of free resources on how to decode the GMAT & work through the various problems, I was able to elevate...
MoreThe mentoring is not cheap, but I decided giving it a go after trying multiple other options. Tim helped me a lot, especially with showing me some shortcuts and helping me address my weaknesses....
MoreI first found GMAT Ninja through their plethora of online resources they post to their youtube channel. These videos were crucial in me getting a 695 on my GMAT FE exam from a prior score of 645....
MoreBest GMAT turoing experience I could have hoped for. I contacted the team less than 2 weeks before retaking the GMAT (Focus Edition). They were able to find me a time slot with David in less than...
MoreI found GMAT Ninja after my first GRE attempt which resulted in a subpar quantitative score. I knew I needed a different approach to studying for the quantitative section and I found the solution...
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