Crush Your Standardized Tests with an Ivy League Expert


Join students worldwide who have conquered the GRE, GMAT, LSAT, SAT, and ACT with the curriculum architect behind Manhattan Prep's inaugural GRE course and the lead author of Amazon's #3 GRE prep book (right after the ones published by, you know, the GRE).

Ready to reach your dream score? Whether you're tackling the GRE, GMAT, LSAT, SAT, or ACT, this personalized 1-on-1 coaching program is designed to transform you into a test-taking machine. You'll work directly with me—an Ivy League graduate, Master in Education, and an absolute "test prep beast" who wrote the curriculum for the biggest names in the industry. Together, we'll dive deep into advanced logic, critical writing, and proven exam frameworks tailored entirely to how you learn best. Available online worldwide or in person in NYC, this isn't just tutoring; it's your ultimate competitive advantage.

Meet Your Test Prep Expert

Hi, I’m Jen D., and I help students master standardized tests through high-level coaching in exams like the GRE, GMAT, LSAT, SAT, and ACT. I’d love to share a bit about my background, my approach, and why I care so much about helping students unlock scores that change their futures.
I didn’t become obsessed with test prep because I love talking about obscure vocabulary words or calculating what time two trains leaving from different cities will meet each other if they travel at different speeds. (Although both of those can be kind of fun.)

I became obsessed with it because I saw how much power these exams hold over people’s futures, and I wanted to understand why these test questions are easy for some people and hard for others.

I studied philosophy at Dartmouth College, later completed a master’s in education, and kept asking the same question: what actually helps students think better, perform better, and stop feeling intimidated by high-stakes tests?

Along the way, I taught in a Korean-American hagwon, coaching a large group of non-native speakers and working within a system that puts much more emphasis on mock tests and sheer hours spent than most Americans are accustomed to. 

I taught SAT, SHSAT, and other exams for The Princeton Review, and developed materials for their books and courses. I moved to Manhattan Prep (now owned by Kaplan), where I taught the GMAT, authored Manhattan's original Foundations of GMAT Verbal book, and developed a series of seminars on Intellectual Performance Enhancement (a fancy way of saying "study skills").

When the GRE started becoming more popular for business school, Manhattan Prep appointed me the first-ever GRE instructor and curriculum designer. I developed the slide decks and materials used by later instructors, and later pitched and edited the bestselling 5 Lb Book of GRE Practice Problems.

Since then, I have been privately coaching students for the SAT, ACT, GRE, GMAT, LSAT, and a few other exams (there are a lot of exams out there, but there's also quite a bit of overlap).

But credentials alone don’t raise scores. You have to be, well ... a nice person (I think I do pretty well!) And interesting enough to make dry material a little bit exciting. I endeavor to get to know people intellectually by figuring out why they make the mistakes they do. If there are two valid solutions to a math problem, which would better fit my student's strengths? If my student gets hit with a certain type of reading passage, are they relieved or daunted? Teaching isn't just conveying information from one person to another; people learn by mapping new information onto an intellectual framework they already possess, so I need to understand that framework to know where my teaching will land, and to help the student retrieve newly-won skills on test day.

Over the years, I’ve coached students with wildly different strengths, concerns, and goals – from Wall Street bankers to teens in Singapore to older adults going back to school for an eMBA to – occasionally – members of a royal family (no, not the British one!) Some needed structure, some needed specific content knowledge before a looming deadline, and some needed someone who could finally explain the test in a way that made it click.

Today, I work with students around the world online and in person in New York City. My mission is simple: take everything I know about logic, learning, and standardized tests, and use it to help my clients turn stress into mastery and ambition into results.

How I Work

I meet with students at my office on Wall Street (literally!) or mostly, of course, online. I have many students in Asia and around the world and am accustomed to creatively scheduling across time zones. We meet over Google Meet, plus a shared online whiteboard system, with a collaborative Airtable where we track missed problems (and their solutions!) Every missed question is a diagnosis – a data-driven approach allows us to track those questions and turn weaknesses into strengths.
My Books and Academic Writing
 


 







Talks and Appearances
 



How I Help You Win Test Day

I provide elite 1-on-1 coaching for the GRE, GMAT, LSAT, SAT, and ACT, combining advanced strategy, logic training, writing support, and personalized study plans so you can raise your score with confidence.

Higher Scores, Smarter Strategy

You won’t just do more practice—we'll do the most important stuff first to get those easy wins on your test. After that, we aim as high as we can. Standardized tests are, in fact, standardized, meaning that it really is the same material over and over. It's not about "confidence" or tricks (and don't give money to anyone who says otherwise); it is absolutely possible to master everything on an entire standardized test, or at least to go as far as we need to for your score goals.

Calm, Confident Test Performance

Strong scores come from both content knowledge and execution (that is, it's fine to know a bunch of procedures, but you need to know when to do each procedure, which can be pretty hard on a timed test!) Through targeted drills, timing strategies, and meticulous test revision, you’ll learn how to keep your performance strong throughout an entire exam.

 


A Plan Built for You

Obviously, when you work one-on-one, you get through more material in less time, with the focus just where you need it. Ideally, we want to be fully prepared for anything a test could throw at us. Sometimes, this is possible! But many students have tight deadlines and limited prep time, so it's important to prioritize, not just based on what the student perceives as difficult, but also based on the probability of encountering that material on the exam (ironically, probability itself is a difficult topic for most students, but it occurs much less frequently on any standardized test than, say, straight algebra questions). Diagnose, triage, turn the greatest weakness into a strength, repeat :)

Elite Guidance Across Top Exams

If you’re deciding between exams, switching goals, or balancing multiple academic demands, you’ll have an expert who understands the bigger picture. I teach the GRE, GMAT, LSAT, SAT, and ACT, along with writing, debate, and academic coaching – and I remember the demands of balancing academics, test prep, and application season. Wondering whether to take the GMAT or the GRE, the SAT or the ACT? I can help.

Elite Coaching for Breakthrough Scores

The Ivy League Blueprint: 1-on-1 Elite Test Mastery
 Working with me means getting more than tutoring—you get a strategic partner who understands how these exams are built and how students actually improve. I combine Ivy League academic training, an M.S. in Education with a specialization in using brain research in teaching and learning, deep curriculum design experience, and years of coaching across major standardized tests to create a personalized path to your best performance. Of course, you can also contact me for academic coaching, writing support, and test prep and textbook writing.
Enter JenPrep
Access Jen's streaming schedule, select recordings, test prep workshops, and Jen's calendar for one-on-one tutoring.