Top 10 Official and ETS-Recommended GRE Preparation Resources for 2027
There is no shortage of GRE prep content online, and most of it is noise. Before you spend money on a random course, it helps to know what ETS, the organisation that actually writes and scores the GRE test exam, puts out officially. These ten resources form the backbone of a reliable GRE course outline, and every one of them comes from ETS itself.
Quick answer: ETS-recommended GRE prep resources include the official POWERPREP Online practice tests, the GRE Official Guide, ETS's own Verbal and Quantitative Reasoning practice question volumes, and ETS's Fee Reduction and test-day readiness materials. Combining these official resources with a structured study schedule typically gives the most reliable score prediction ahead of test day.
The 10 Resources, Ranked by How ETS Positions Them
These simulate the actual test interface, including the on-screen calculator and the test-taker friendly layout you will see on exam day.
Because the real GRE is section-adaptive, meaning your performance on the first Verbal or Quant section affects the difficulty of the next, only an ETS-built tool replicates that scoring logic accurately. Third-party mock tests cannot fully simulate this.
2. POWERPREP PLUS Online (Paid, but Still Official)
These give you a full score report within minutes across all three measures: Verbal, Quantitative, and Analytical Writing.
If your free POWERPREP tests are already done and you want more data points before test day, this is the next official step, not a third-party alternative.
3. The Official Guide to the GRE General Test
Published directly by ETS, the Official Guide includes two more full-length practice tests plus hundreds of authentic retired GRE questions.
It also includes worked explanations, official test-taking strategies, and sample essay responses with reader commentary, useful since AWA scoring criteria are notoriously hard to self-assess.
Between POWERPREP, POWERPREP PLUS, and the Official Guide, a student has access to a total of seven official full-length practice tests without touching a single third-party resource.
4. Official GRE Verbal Reasoning Practice Questions, Volume 1
This ETS volume adds 150 additional real Verbal Reasoning questions with full explanations.
It also includes fresh Analytical Writing practice, useful if you have exhausted the essay prompts in the Official Guide.
Best used after you have completed at least one full practice test and identified Verbal as a weak area.
5. Official GRE Quantitative Reasoning Practice Questions, Volume 1
The Quant counterpart to the Verbal volume above, with additional real questions and detailed explanations.
Particularly useful for students coming from a non-engineering background who need more repetition on data interpretation and quantitative comparison question types.
6. ETS Math Review
A free document covering every math concept tested on the GRE Quant section, from arithmetic through basic geometry and data analysis.
This is not a practice question bank. It is closer to a syllabus refresher, useful if it has been years since you last studied formal mathematics.
7. ETS Sample Scored Essays
ETS publishes sample Issue and Argument essays at different score levels, along with the reasoning behind each score.
Reading a top-scored essay next to a lower-scored one on the same prompt makes it much clearer what raters are actually looking for, something no generic essay template can teach you.
8. GRE ScoreSelect
Not a study resource in the traditional sense, but part of ETS's official toolkit worth understanding early.
ScoreSelect lets you choose which test attempt's scores to send to universities, so a weak practice score or even a weak real attempt does not have to follow you if you retake the test.
9. ETS Fee Reduction Program
For eligible candidates, ETS offers a Fee Reduction voucher that significantly reduces the GRE General Test cost, along with free access to select prep materials worth roughly $100.
Eligibility criteria are specific and mostly targeted at candidates demonstrating financial need, so check ETS's own eligibility page rather than assuming automatic qualification.
10. Official GRE Test-Day Experience Guide
ETS publishes what-to-expect guides covering ID requirements, prohibited items, and the check-in process at test centres.
This sounds minor, but a surprising number of students lose test time or get flagged at check-in over avoidable issues like an unaccepted ID format.
How to Sequence These Into a GRE Course Outline
A reasonable order for a 3 to 4 month GRE course outline looks like this:
Weeks 1 to 2: Work through the ETS Math Review, then take your first free POWERPREP Online test as a diagnostic.
Weeks 3 to 8: Use the Official Guide and the Verbal and Quantitative practice volumes for concept-specific drilling, based on what your diagnostic revealed.
Weeks 9 to 11: Take your second free POWERPREP test, then move to POWERPREP PLUS for additional full-length practice under real test conditions.
Week 12: Review ETS's Sample Scored Essays, revisit weak areas, and go through the test-day experience guide so nothing on exam day is unfamiliar.
Keep in mind the GRE itself runs about 1 hour and 58 minutes, shortened significantly from the older 3 hour 45 minute format, with 54 scored questions across Verbal and Quant plus one Analytical Writing task. Any material describing the old, longer format is outdated and can throw off your pacing practice.
Where This Fits Into Your Bigger Application Timeline
Having access to every resource on this list does not automatically translate into a strong score, which is exactly why WIKATI, as the best study abroad consultancy in Hyderabad, builds a GRE timeline around each student's actual target programmes rather than handing out a generic checklist. Through our study abroad counselling service, we help you decide whether the GRE is even worth your time before you commit three months to it. You can explore destination-specific requirements on ourstudy in USA page, since GRE requirements vary widely by American programme, or get in touch through our contact pagefor a personalised test prep timeline.
Frequently Asked Questions
What is ETS POWERPREP and is it free?
ETS POWERPREP Online offers two full-length GRE practice tests completely free once a student creates an ETS account. It simulates the actual test interface and adaptive scoring logic used on test day.
Which GRE prep materials does ETS officially recommend?
ETS's own materials include POWERPREP Online (free), POWERPREP PLUS Online (paid), the Official Guide to the GRE General Test, the Official Verbal and Quantitative Reasoning practice question volumes, the ETS Math Review, and sample scored essays.
Are official ETS practice tests more accurate than third-party ones?
Generally yes, because the real GRE is section-adaptive, meaning performance on an early section affects the difficulty of later sections. Only ETS-built practice tests replicate this scoring behaviour accurately.
How many official GRE practice tests are available?
Across POWERPREP Online (2 free), POWERPREP PLUS Online (3 paid), and the Official Guide (2 more), students have access to seven official full-length practice tests directly from ETS.
Is the GRE Official Guide enough to prepare fully?
It is a strong foundation with real questions and full-length tests, but most students combine it with the free POWERPREP tests and the separate Verbal and Quantitative practice volumes for more complete coverage, especially in their weaker section.
