HiSET Science
More study resources
Cheat sheet
Keep the key ideas within reach.
ExploreKey terms
Get comfortable with the vocabulary.
ExploreStudy plan
Give each week a clear focus.
ExploreCommon mistakes
Understand the traps and how to avoid them.
ExploreCase studies
Put your knowledge to work in context.
ExploreExam-day guide
Prepare for the day ahead.
ExploreAbout this exam
The HiSET® exam is a high school equivalency (HSE) pathway offered through PSI, giving adults who did not finish a traditional high school program a route to a credential that can open doors to college, training, and employment. The Science subtest is one of the five subject tests that make up the battery; it is delivered in a multiple-choice format and, like the other subtests, is designed to measure reasoning with scientific information rather than memorized vocabulary alone. Candidates should expect to work with data presented in passages, tables, graphs, and experimental descriptions drawn from physical science, life science, Earth and space science, and the practices of scientific inquiry - roughly a quarter of the content from each area. Preparation works best as a routine: review each content area, practice reading charts and experimental setups critically, and take a full-length practice test under timed conditions so pacing problems surface early. Everything logistical - eligibility, fees, passing scores, retake rules, and whether online proctored testing is available to you - is set at the state level, so confirm the details on your state's requirements page before you schedule. Accommodations for test takers with disabilities are available through a separate request process.
What you'll study
About HiSET Science preparation
What is the Science subtest actually testing?
It measures how well you interpret scientific information: reading a short passage or experiment description, understanding a data table or graph, and choosing the conclusion the evidence supports. Content is drawn broadly from physical science, life science, Earth and space science, and scientific inquiry practices, so no single specialty dominates your score.
How many questions are on the Science test and how long do I get?
The official HiSET source material available here does not publish an item count or time limit for the Science subtest. Rather than rely on remembered figures that may be outdated, check the current test-day information in your myHiSET account or the official subject page before you schedule.
What score do I need to pass, and what is the fee?
Both are set at the state level, not by a single national rule. The official pages direct test takers to their state requirements page for requirements and fees. Look up your state there, then confirm the Science passing standard, combined-score rules, and cost before paying for an appointment.
Can I retake the Science subtest if I miss the cut score?
Retake policies, waiting periods, and any fees for additional attempts are determined by your state, so the exact rules vary. Check your state requirements page and your score report, which typically explains your options. You generally do not need to retake subtests you have already passed.
In what order should I study the four science areas?
There is no required order. Diagnose first: take a practice test, note which area produced the most misses, and start there. Inquiry-style questions - designing a fair test, spotting a confounding variable, reading a graph - cut across all three content areas, so practice those skills continuously instead of saving them for last.
Why do strong science students still lose points?
The usual cause is not weak content knowledge but careless reading of data. Test writers often include a plausible answer that ignores a unit, misreads the axis, or describes a correlation as a cause. Slow down on tables and graphs, check units, and eliminate choices that overstate what the experiment actually shows.
Is the Science test available online?
The HiSET program lists online proctored testing among its test options, in addition to testing at a test center. Availability can differ by state and by test taker, so confirm on your state requirements page whether online proctored delivery applies to you and what equipment or system checks are required.
What free or low-cost preparation is available?
The official site points test takers to practice tests and to preparation resources including HiSET Academy by Essential Education, along with a resource library containing test taker toolkits. Start with an official practice test to benchmark yourself, then use the study resources to target the areas where your score was weakest.
How do I request testing accommodations?
Accommodations for test takers with disabilities are requested through a separate process rather than at the scheduling screen. The official site lists test accommodations as its own section and warns that approval takes time, so submit your documentation well before your intended test date to avoid losing an appointment slot.