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Hi, I'm Danny! With 5 years of teaching high school math followed by 8 years of experience as a GMAT Instructor at Manhattan Prep, I have successfully coached over 500 students to achieve their target scores and gain admission to top business schools. My background includes an MBA from Columbia Business School, equipping me with firsthand knowledge of what top programs seek in applicants. I specialize in breaking down complex quantitative and verbal concepts, making them accessible and manageable for all learners. Whether you're aiming for a perfect score or need to boost your confidence in specific sections, I'm here to tailor a study plan that fits your unique needs. Let's connect and strategize your path to GMAT success!

I’m a deferred MBA admit to the Kellogg School of Management and scored a 715 on the GMAT Focus Edition — a 99th percentile result — after just under three months of self-prep. My goal as a coach is to help you optimize your study time, focus on high-yield strategies, and avoid the common pitfalls that waste time and lead to burnout. I’ll walk you through the exact frameworks, mental models, and resources I used to reach my score, and help you tailor your prep plan based on your unique strengths and goals. Whether you’re just starting your GMAT journey or aiming to break through a plateau, I’ll help you build the structure and confidence you need to hit your target score — faster and smarter.

Carl has taught, literally, thousands of students to succeed on the GMAT, and thousands more the ACT, SAT, GRE, and LSAT, over a career spanning over two decades in the test preparation world. Originally an academic, he holds advanced degrees from Yale, the University of Glasgow, and the University of Georgia, and since leaving academia he has taught, tutored, and written content for Magoosh, Kaplan, Harvard Prep, SuccessPrep, Parliament Tutors, Varsity Tutors, and many other companies, and has since founded his own company, Ivory Tower Tutoring. He was also, for many years, the chief writer for Barron''s GMAT product line.

The only way to do well on the GMAT and the GRE is to understand the material and to know how to answer the questions. Cheats and guessing strategies don’t work, and you can’t “beat” or “outsmart” the tests. I am a Certified Teacher who has taught the material that appears on these tests in school. MY APPROACH IS TO TEACH YOU THE CONCEPTS AND SKILLS YOU NEED TO ANSWER THE TEST QUESTIONS CORRECTLY. I scored in the 99th percentile on the GMAT and the SAT, and I have a thorough understanding of the tests. I am a writer, with excellent language skills. As a Certified Teacher, I have 20-plus years’ experience as a teacher, tutor, test prep coach, and business trainer. I am a former teacher of high school math – exactly the math that appears on the tests – and of English grammar and writing. I am a trained and certified teacher. I have a Bachelor of Education degree and Adult Education training. I also have an MBA and have worked on Wall St as a Vice President at a major financial institution, as well as in several other business and management positions.

I scored a top 1% score on the GMAT Focus Edition within three weeks of dedicated preparation. I will teach you the strategies and study plan I used to ace the GMAT. I previously scored a 1570 on the SAT and 35 on the ACT, having coached multiple students to achieve top 1% scores in a multitude of standardized tests.

I bring over 14 years of experience teaching maths at the university level, combined with extensive expertise in GMAT preparation, particularly the new GMAT Focus Edition. As a Professor, I specialize in building deep quantitative reasoning skills — not just shortcuts, but real structural understanding that leads to consistent high performance. What differentiates me as a GMAT coach is my analytical, data-driven approach. I don’t believe in generic study plans. I diagnose performance patterns, identify conceptual gaps, timing inefficiencies, and decision-making errors, and then build a personalized strategy tailored to each student’s target score and timeline. I have worked with students helping them improve not only their Quant and Data Insight scores, but also their overall test-taking strategy, time management, and confidence under pressure. If you’re looking for structured thinking, clarity, and a strategic roadmap to maximize your GMAT score — I’m here to help you get there.

I've been coaching the GMAT for almost as long as distance learning has been around. However, my story really starts in 2006, the year I notched a nifty 770 on my GMAT and received a scholarship to the USC - Marshall School of Business. In the following years, I made the Graduate Dean's list in 3 semesters, and excelled at such courses as Microeconomics, Corporate Finance, and Statistics. My general academic interests fun rather parallel to the topics of the GMAT, and I sincerely feel that any incoming b-school student should have excellent capabilities in reading comprehension, argumentation, and college level quantitative skills. In the decade I've been coaching students in the GMAT, I've worked with nearly 250 people over a wide range of academic and professional backgrounds, and thus have dozens of success stories from students who succeeded in increasing their scores by 100+ points! I have had a wide variety of students, but I would consider my niche to be veterans/active military, folks with learning disabilities, and those in search of a scholarship

Welcome to my profile! As a current MBA candidate at Stanford Graduate School of Business with a strong background in tech and business development, I bring a unique perspective to GMAT coaching. My journey includes co-founding a successful startup acquired by Rappi and leading strategic initiatives at companies like CloudWalk and Boston Consulting Group. I understand the importance of a strong GMAT score in opening doors to top business schools and have helped numerous students improve their scores and gain confidence in their test-taking abilities. Let's work together to create a personalized study plan that targets your weaknesses and maximizes your strengths. Reach out to start your journey towards GMAT success!

I got 4.0 in undergrad but I am not a standardized test taker. I studied for the GMAT for 1 year and wasted a ton of time studying the wrong thing. But, I managed to go from a 530 to a 730 (Q49) within 2 months of focused, guided effort from a coach and want to share that knowledge with you. The practice exam before my final test was a 760.