When you’re considering graduate school, the first step is likely going to be learning about the Graduate Record Exam (GRE). This test is a basic requirement for any graduate program, and going into the testing room prepared is a smart way to increase your score.

Of course, prep work for a test this important involves more than just taking sample tests. GRE prep courses (for general and subject tests) can give help you to understand the logic behind the questions to find the correct answer as quickly as possible.

Top 10 Best Rated GRE Prep Courses

Varsity Tutors offers one-on-one GRE test prep tutoring, allowing you the choice between online test preparation and in-home tutoring. Varsity also offers a money-back guarantee if you are not completely satisfied.
Magoosh provides GRE prep questions you can access via the Web or mobile app, with prep videos taught by experts and progress tracking through its smart review system. Access 200 GRE lessons and customized practice sessions.
Kaplan Test Prep offers a range of GRE test options as well as frequent specials and free graduate school guides. Choose from personal tutoring, live online instruction and self-paced learning, or sign up for a GRE bootcamp.
Cambridge Coaching got its 2005 start with PhD candidates from Harvard University. Today, the company offers 90-minute GRE tutoring sessions, customizable tutoring packages, online GRE prep resources and free consultations.
Launched in 2006, Stratus Prep works to help individuals earn high scores on the GRE. Tutoring packages start with five hours of help and range up to 100 hours of instruction. Schedule a free consultation to get started online.
Parliament Tutors' GRE prep takes place in your home. Choose from 10-, 24- and 32-hour GRE prep tutoring packages, and you can even ask your tutor for online tutoring hours. An academic advisor helps guide the process.

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What features matter most?

Covers 6 sections

The GRE will have two sections on verbal reasoning, two on quantitative reasoning, one on analytical writing and an experimental section.

  • Verbal reasoning: This covers reading comprehension, text completion and sentence equivalence.
  • Quantitative reasoning: Remember that this is no higher than 7th grade math, so there will be no calculus or trigonometry.
  • Analytical writing: You will write two essays analyzing either an issue or an argument.
  • Experimental: This section that isn't scored. You probably won't be able to identify it, but this is the experimental section. Normally, it will be another verbal or quantitative reasoning section, and it could pop up at any time.


Electronic versions of the test should adapt based on your right and wrong answers, just like the real test.

  • Adaptive features: Adaptive features should vary by section, so you always start out with a clean slate as you move through the test.
  • Scoring: The scoring mechanism should be as close as possible to the official ETS guidelines.
  • Paper vs. digital: Paper tests won't prepare you for the real GRE's digital features. If you will be taking the paper test though, don't practice with electronic versions.

Mimics the GRE

Try to take the practice tests under conditions that are close as possible to the physical environment of the real test.

  • Test Conditions: When you take the real electronic version of the test you'll be sitting in a booth staring at a screen for 3 hours and 45 minutes, with breaks between sections.
  • Preparation: Your prep should prepare you for the physical aspects of getting tired or cramped while still maintaining your concentration.

Range of questions

One of the biggest differentiators is the sheer number of practice questions, from hundreds to thousands.

  • Questions: Make sure the prep will never run out of questions and that it covers all the sections equally well.
  • Scoring: The more questions you are able to successfully answer in the final test, the higher your score can go.
  • Up to date: Make sure the questions are based on the most current GRE because it changes greatly from year to year.

Personalized feedback

In the past people bought a practice test and scored themselves. You need more accurate guidance on your weaknesses.

  • Tutors: Look for a program or tutor who can tell you where you need to improve.
  • Improvement plan: Make sure the prep can identify your weak areas and offer a plan for improvement.
  • Computer programs: If mentoring with a personal tutor isn't possible, you can work with a detailed computer test to point you in the right direction.

Online or in person tests

Some students need the quiet focus and odd hours of online practice. Others only succeed with social support.

  • Best option: Only the most competitive scores will help you get into your first choice graduate program. Even if you prefer to learn socially, be practical and choose what will deliver a better score.
  • Pacing yourself: Remember that excelling in the GRE is really about pacing yourself to stay sharp all the way to the end of the test. Don't get distracted. The practice test and tutor should prepare you for this.

What are different types of GRE prep?

Paper test prep

There are still parts of the world where paper GRE tests are necessary because there is no computer-based testing center nearby. Preparation for these tests should be done with the traditional workbooks that contain advice on question logic, full-length tests from prior years and advice based on wrong answers.


Nearly all test prep companies have a companion mobile version so that you can keep learning on the road. Though, mobile versions may not come with all the functionality of the desktop version.

Desktop programs

Fully adaptive web-based programs are the closest simulation of the actual experience of taking the real GRE. Make sure your environment is conducive to quiet test-taking and that the practice tests respond with offers of advice on your weak areas.


These are instructor-led courses with varying class sizes, usually held in large metropolitan areas. You can take them in person, by recorded video or live in real-time with online streaming services.

Private tutors

Private tutors are often responsible for the largest improvements in testers' scores, simply due to all the dedicated personal attention. A motivational coach helps you control your emotional responses as well as showing you new test-taking practices. If you're not happy with your scores using one of the other methods, this is the next logical step.

Who's it for?

Mass market

This is the general public that simply wants a decent score. The goal is a decent showing in each of the 6 sections. These students may not have a lot of time to study or may not be over-concerned about their GRE scores because other parts of the admissions process may need more attention.

Busy professionals

Many students are already in the working world when they decide to go to graduate school. Studying around work and family can be very stressful. Exam prep companies excel at solving these scheduling issues.

Repeat test takers

Everyone can improve their GRE scores through a good prep program. Many people tend to think that they can't improve their essay or math scores, but that's not true. Improving scores in weak areas is about predicting the questions, understanding how questions are constructed and eliminating distractions.

Students with test anxiety

Like any other test, the GRE comes with its own logic, and your job is to understand that logic through practice and analysis. Replace your old test-taking assumptions with new approaches and repeat them until they are habits.

High scoring students

Things get super-competitive at the top and one or two points can decide which program accepts you. Some exam prep companies specialize in incremental improvements at the high end. Remember that the GRE is not a test of knowledge, but of how well you can research and perform under pressure.

Company reviews

  • Magoosh

    Magoosh gives you a program for your desktop, or an app for your mobile device, with thousands of GRE questions and full-length tests.

    • Best for This is a low-priced, technologically advanced option for people who need to study on the go.
  • The Princeton Review

    The Princeton Review specializes in private and semi-private tutoring classes with top of the line instructors.

    • In-depth: You receive more than 200 hours of personalized instruction and resources, including guidance from a live instructor, either in person or online.
    • Realistic testing: You can take practice GRE exams eight times in conditions very similar to the real test.
    • Available everywhere: A zip code search on the Princeton Review website will identify the closest study center or personal tutor who can travel to wherever you want to study.
    • Current instructors: Instructors are required to take the GRE periodically to stay up to date with the latest changes.
    • Community: Semi-private classrooms introduce you to other students who are preparing to take the GRE for additional study and mutual support.
    • Leaps in improvement: Many students who struggled with independent study have improved scores by double digits.
    • Best for This is the ideal GRE prep for anyone who needs a more structured approach to studying.

  • Manhattan Prep

    Since 2000, Manhattan Prep has covered the middle of the market with instruction options ranging from self-study to private one-on-one mentoring.

    • Three levels: You can move between levels of support, from online self-paced, to in-person classrooms to one-on-one tutoring.
    • Smaller class sizes: Fewer students per instructor gives each person the attention they need in a supportive classroom environment.
    • Focus on fun: Studies prove that students learn better when they enjoy what they are doing. The instructors find ways to make sure the material is lively and entertaining.
    • Study supplements: Students get nearly 2,000 questions across various online tools and physical study guides, whether or not they choose the classroom option.
    • Archived lectures: When you need to review a concept, you can pull up archived videos of any classroom instruction session to access related information.
    • Different approaches: Original materials like flash cards, forums and GRE events engage alternate learning methods that some students require.
    • Best for These GRE prep methods take only a moderate commitment and aim to provide a more enjoyable, low pressure means of preparing for the big day.

  • Kaplan Test Prep

    Kaplan was among the very first test prep companies, and was founded in 1938. It is now an umbrella organization supporting many other private education companies.

    • Best for Students who want the most advanced technology and experienced instructors on their side.
  • PowerScore

    Since 1997, PowerScore has made a name for itself in the GRE prep field with an innovative philosophy focused on shorter study times, tighter focus areas and practical affordability.

    • Lower prices: Many resources, tests and seminars are free, and PowerScore offers a variety of packages to fit into any budget.
    • Six levels: From webinars to 30 hours of detailed instructions, you have many options for the duration and intensity of study.
    • On-site in some states: Although they offer primarily online courses, PowerScore has made classroom arrangements in 21 states so far.
    • Telephone tutors: Tutoring over the phone is a unique and useful option for those who are on the road, don't have steady web access or just learn better by hearing.
    • Accelerated learning: If you're short on study time, accelerated learning classes condense full courses into weekend study events.
    • Tighter targeting: Many students need to focus only on one or two areas of study. PowerScore offers targeted course options to maximize your improvements in specified sections of the test.
    • Best for PowerScore is a low cost option for people who need a tight, concentrated approach to acing the exam.

  • Cambridge Coaching

    Cambridge Coaching is a tutoring-only program, and is among the newest entrants in the GRE prep field, having launched in 2005.

    • Best for Busy professionals who need highly educated and personalized attention that is flexible.
  • Varsity Tutors

    The newest entrant in this field is Varsity Tutors, founded in 2007. Their private tutors have built up a database of more than 100,000 questions across 150 subjects.

    • Best for Those looking for highly educated tutors, that can stay involved in academic achievements long after the GRE is finished.
  • Manhattan Review

    In 1999, Manhattan Review began as a GMAT prep system before gradually expanding to cover the GRE and related exams. They have offices on every continent.

    • Specialized testing: Beyond the GRE general exam, they cover GRE subject exams like Literature, Physics and Molecular Biology.
    • Subject matter first: Instead of concentrating on the mechanics of questions, this prep begins with exploring what the GRE expects you to know.
    • Larger role of the GRE: Scores mean more than just getting into your preferred schools. This program helps you achieve scores that can win scholarships, fellowships or teaching assistant positions.
    • Online backup: The online library of post-class reviews and streaming video comes with unlimited access, 24 hours a day.
    • Best for Students that are analytical by nature and want broader academic applications for their studies.

  • Stratus Prep

    Since 2006, Stratus Prep has grown rapidly across more than 30 countries. They specialize in private tutoring for test prep, along with admissions counseling.

    • Best for Students who value flexibility and efficiency will do well with Stratus.
  • Parliament Tutors

    Parliament's GRE Tutoring program is a recent addition to their well-established K-12 tutoring programs. Now their extensive network of tutors covers college subjects and exams from undergrad to Ph.D. level.

    • Best for Students who need private, in-home tutoring for in depth lessons and test prep.