Rich Zwelling has been teaching the GRE for more than a decade and has logged thousands of hours working with students on six continents. An inspiring instructor, Rich loves helping students learn to crack challenging problems in both quant and verbal and gain entry into top business schools.

His empathetic, warm, and versatile approach and deep knowledge of the GRE make him an ideal teacher for students of any background and skill level.

With more than 15 years of test prep experience, including more than 8 years teaching, tutoring, and writing about the GRE, Bill has taught and tutored in 5 countries, 11 states, and 20 cities, in addition to countless hours of online instruction with students around the globe.

Beyond his time spent working directly with students, he has also contributed to the
design and development of a GRE curriculum from the ground up, in addition to writing and editing homework and practice test questions. Through this process, he has developed a deep understanding of not only the content of the GRE but also the most effective strategies for handling anything the exam can present.

Bill’s favorite part of GRE instruction is helping students see exactly what the test writers are attempting to do, avoid the traps that have been set up, and find the most efficient path to the correct answer. His second-favorite part is the chance to deliver some truly groan-worthy math jokes.