Charles bibilos

Charles Bibilos is one of the world’s most accomplished independent GMAT instructors, with more than 15 years of experience as a classroom teacher and private tutor.


mike maietta

Michael graduated summa cum laude in Mechanical Engineering, and is an experienced teacher, writer, and management consultant.


dave goldstein

Dave has taught test prep since 2004, winning teacher-of-the-year awards from two major test-prep companies before joining GMAT Ninja.


dana stepleton

Dana is a West Point graduate and former Army captain who has earned a 780 on the GMAT, in addition to 99th percentile scores on the GRE, SAT, and ACT.


We want you

Do you love teaching? Do you enjoy crushing standardized tests, even if you’re embarrassed to admit it to your friends? Let’s work together!