CLEP Natural Sciences

What is it?

What exactly is the CLEP Natural Sciences?

Satisfy a science distribution requirement with six credits, no lab required.

The CLEP Natural Sciences exam is a survey for non-science majors spanning biological and physical sciences, equivalent to a two-semester freshman sequence. It emphasizes understanding principles and applying them to contemporary issues rather than recalling facts. It commonly awards six semester hours and is a broad science general-education credit.

The path in brief

1. Confirm your school’s science policy
2. Register and pay the $97 fee
3. Book a test center or remote-proctoring slot
4. Review bio and physical principles
5. Score 50+ for six credits

Before you book

Who is eligible to sit the CLEP Natural Sciences?

The test itself

What is the format of the CLEP Natural Sciences?

The CLEP Natural Sciences is administered by CLEP test center or CLEP with Remote Proctoring and runs 90 minutes and requires 50 (ACE credit-granting score) to pass.

The fine print

What are the retake and renewal rules for the CLEP Natural Sciences?

Proctoring & delivery

All SAT Suite tests are taken in Bluebook on a laptop or tablet, in a school or an authorised weekend test centre, under a live human proctor. There is no at-home option. Bluebook locks the device, and a built-in Desmos graphing calculator and formula sheet are available throughout the Math section; you may also bring your own approved non-CAS calculator.

Retake policy

There is no limit on SAT attempts and no mandatory waiting period beyond the eight national dates offered each year. The PSAT-related assessments are given once per school year per grade band and are not retaken on demand. Most selective colleges superscore across SAT sittings, taking your best Reading and Writing score and your best Math score.

Score reporting

The SAT reports a 400 to 1600 total built from two 200 to 800 section scores. The PSAT/NMSQT and PSAT 10 report 320 to 1520 with 160 to 760 sections, and the PSAT 8/9 reports 240 to 1440 with 120 to 720 sections, so results across the suite sit on one comparable scale. PSAT/NMSQT reports also carry an NMSC Selection Index of 48 to 228.

Recertification

SAT Suite scores do not expire and never need renewal, but colleges commonly ask for a score from within the last five years and most students test in the spring of eleventh grade and again in the autumn of twelfth grade. Only a PSAT/NMSQT taken in eleventh grade enters the National Merit competition.

Refunds & rescheduling

Cancelling an SAT registration by the change deadline costs 34 dollars; cancelling after the deadline but before test day costs 44 dollars. Changing test centre costs 34 dollars, and late registration costs 38 dollars. Fee-waiver students are not charged for cancellation or late registration.

What it pays

How much does this credential pay?

No direct occupation — a CLEP Natural Sciences score of 50 earns 6 semester hours of college credit (a two-semester survey of biological and physical science), and the payoff is the education-return premium: bachelor’s-degree holders earned $1,493/week vs $1,059 for associate and $899 for high-school-only (BLS, 2023)

The direct answer is that CLEP Natural Sciences has no BLS occupation of its own — it is a credit-by-examination assessment whose payoff is the college credit it earns and the tuition and time it saves — so the salary story is the education-return premium that CLEP credit accelerates for degree completion, and for non-science majors with a science distribution requirement the credit often clears a general-education box that would otherwise cost two semesters of courses. The relevant reference points from BLS: in 2023, workers with a bachelor’s degree earned a median weekly wage of about $1,493 versus about $1,059 for associate-degree holders and about $899 for high-school-diploma-only workers, and the May 2024 median wage across all occupations was $49,500. A score of 50 or higher on the 20-to-80 CLEP scale earns the ACE-recommended credit of six semester hours for CLEP Natural Sciences, which the ACE National Guide equates to a two-semester survey course covering both biological and physical science — a credit block twice the size of most CLEP exams — and colleges that accept CLEP credit typically grant the six hours under their own policies, with some requiring a higher score or not accepting the credit toward particular requirements. The practical financial value is significant: a roughly $93 exam can replace a full year of introductory science survey courses — at in-state public tuition that is often well over a thousand dollars for six credit hours — and for a non-science major it clears the science distribution requirement in a single sitting. The honest framing is that the value is measured in credits, tuition saved and time-to-degree, not in a salary line tied to the exam itself — and for a student deciding whether to sit it, the investment is the exam fee, roughly $93 plus a test-centre fee, and the preparation hours, which are substantial because the exam samples a two-semester survey of biology and physical science in 90 minutes, testing understanding and application of scientific principles rather than specialist detail.

Job growth.BLS does not project growth for a CLEP exam; the relevant projections follow the occupations the earned degree feeds into, and the value is the six credit hours, tuition savings and time-to-degree it buys for non-science majors with a science distribution requirement.

Source: BLS Education Pays

Your schedule

How long should I study for it?

80-120 hours over 8-12 weeks (or a 4-6 week review after recent high school science) of focused study

Plan for 8 to 12 weeks and 80 to 120 hours of study if the sciences are unfamiliar, or a 4-to-6-week structured review if you recently took high school biology and chemistry or physics, because CLEP Natural Sciences compresses a two-semester survey of biological and physical science into approximately 120 questions in 90 minutes — about 45 seconds per question — and tests the understanding and application of scientific principles rather than specialist detail. The published content breakdown is the planning map: biological science at 50 percent — origin and evolution of life and classification at 10, cell organization and division, the chemical nature of the gene, bioenergetics and biosynthesis at 10, structure, function and development in organisms and heredity at 20, and population biology with emphasis on ecology at 10 — and physical science at 50 percent — atomic and nuclear structure at 7, chemistry at 10, heat, thermodynamics, mechanics and relativity at 12, electricity and magnetism, waves, light and sound at 4, the universe at 7, and the Earth at 10. The most effective sequence: first, take a full timed practice exam to baseline and log every miss by category, because the exam is broad enough that the gap is usually a coverage gap; second, build the biological science half — evolution and classification, cell biology and genetics, the structure and function of organisms and heredity, and ecology — because it is half the exam and the topics interconnect; third, build the physical science half — atomic and nuclear structure, chemistry, heat and thermodynamics, mechanics, electricity and magnetism, waves, the universe and the Earth — because non-science majors are usually weaker here and the biggest gains come from a systematic survey; fourth, rehearse the application and interpretation skills the exam explicitly weights — qualitative and quantitative application at about 40 percent and interpretation of graphs, diagrams and tables at about 20 percent — because combined they are 60 percent of the exam and no calculator is provided or permitted, so the questions are conceptual rather than computational; and fifth, in the final two weeks, take two or three full timed exams and re-study the weakest categories. Confirm your college’s credit policy before you invest the hours — six hours is the largest credit block in the CLEP catalogue and some programs treat it differently — and note the exam fee is roughly $93 plus a test-centre administration fee.

1. Weeks 1-210-12 hrs/week

   Baseline and biological science: origin, cells and genetics

   • Take a full timed practice exam and log every miss by category
   • Study origin and evolution of life and the classification of organisms
   • Master cell organization and division, the chemical nature of the gene, bioenergetics and biosynthesis
2. Weeks 3-410-12 hrs/week

   Biological science: organisms, heredity and ecology

   • Study structure, function and development in organisms, and patterns of heredity — the 20% block
   • Cover population biology with emphasis on ecology
   • Review evolution and the tree of life as the framework that ties biology together
3. Weeks 5-610-12 hrs/week

   Physical science: chemistry, atoms and nuclei

   • Study chemical elements, compounds, reactions, molecular structure and bonding
   • Cover atomic and nuclear structure, elementary particles and nuclear reactions
   • Practise reading chemical equations and interpreting the concepts, not computing
4. Weeks 7-810-12 hrs/week

   Physical science: physics, the universe and the Earth

   • Study heat, thermodynamics, states of matter, classical mechanics and relativity — the 12% block
   • Cover electricity and magnetism, waves, light and sound
   • Survey the universe — galaxies, stars, the solar system — and the Earth: atmosphere, hydrosphere, geology
5. Weeks 9-1010-12 hrs/week

   Application, interpretation and full exams

   • Practise the qualitative application items — the exam emphasises concepts over calculation
   • Work graph-, diagram- and table-based interpretation questions
   • Take two or three full timed practice exams and re-study the weakest categories

What to buy

Which study resources are worth paying for?

CLEP Natural Sciences preparation is dominated by free and low-cost resources, and the buying decision is about study hours rather than product price: the College Board CLEP page defines the exact format, the content breakdown and the skill weights, the ACE National Guide confirms the six-hour credit, and the content itself is covered to a solid standard by free resources — open biology, chemistry and physics texts, free survey courses such as Modern States, and reputable science-education sites. The cost structure to plan against is the exam fee — roughly $93 paid to College Board plus a separate test-centre administration fee that varies by location, commonly $15 to $40 — and because this is a breadth-based credit exam with a public blueprint, the real investment is the 80 to 120 hours of study the two-semester survey deserves, not the price of a prep product. The Modern States free CLEP Natural Sciences course is worth calling out specifically because it is mapped to the syllabus and Modern States has historically offered free exam vouchers to students who complete its courses, which removes even the $93 fee for eligible candidates. The comparison below separates the official and free resources from the modest paid options, with prices current to this review. The rule that works: build the content with free resources — open texts and the Modern States course — rehearse the 90-minute, roughly 120-question timed format with practice exams until you score at or above 50 consistently, and spend money on a structured course only if self-study has already failed to reach the ACE-recommended 50 target — for a breadth-based, multiple-choice credit exam with a public blueprint, the free path is normally sufficient, and the hours matter more than the fee.

Prices approximate and dated to this review; the exam is offered year-round by appointment, and the test-centre administration fee is separate from the ~$93 exam fee. We do not rank by commission.

What you'll face

What question types will I see?

The CLEP Natural Sciences exam is approximately 120 multiple-choice questions answered in 90 minutes, scored on a 20-to-80 scale with the ACE credit-granting score at 50 for six semester hours, and there is no penalty for guessing. The content covers a two-semester survey of biological and physical science at the introductory level, with a published breakdown: biological science at 50 percent — origin and evolution of life and classification at 10, cell organization and division, the chemical nature of the gene, bioenergetics and biosynthesis at 10, structure, function and development in organisms and heredity at 20, and population biology with emphasis on ecology at 10 — and physical science at 50 percent — atomic and nuclear structure and nuclear reactions at 7, chemistry at 10, heat, thermodynamics, mechanics and relativity at 12, electricity and magnetism, waves, light and sound at 4, the universe at 7, and the Earth at 10. The College Board publishes three skill categories: knowledge of fundamental facts, concepts and principles at about 40 percent, interpretation and comprehension of information presented as graphs, diagrams, tables, equations or verbal passages at about 20 percent, and qualitative and quantitative application of scientific principles at about 40 percent, with more emphasis on qualitative than quantitative application — and no calculator is provided or permitted. The practical pacing is about 45 seconds per question, which makes recognition speed and the skip-and-return discipline essential — flag anything that takes more than about 50 seconds and come back to it. The application items are the distinctive feature: they describe a scenario and ask what the relevant principle predicts, and the interpretation items present a graph, diagram or table and ask what it shows. The samples below are editor-written illustrations of the published blueprint, not live exam items.

Samples are editor-written illustrations of the published blueprint, not live exam items.

Reference

What are the key facts about the CLEP Natural Sciences?

CLEP Natural Sciences is a exam credential; awarded by College Board; the exam fee is $97 (2025–26) + test-center fee; typical preparation is 30-50 hours over 3-5 weeks; holders typically earn College credit outcomes vary by school (ACE recommends 50).

In short

Is the CLEP Natural Sciences worth it?

• Equivalent to a two-semester science survey
• ~120 questions in 90 minutes; score 50 for ~6 credits
• Equal biological and physical science splits
• Built for non-science majors

Worth comparing

How does the CLEP Natural Sciences compare with similar credentials?

• CLEP Biology College Board

Trust

Where does this information come from?

Everything above is taken from the awarding body's own published material. Fees, question counts and domain weights are revised regularly — check the official page before you pay.

• College Board Awarding body
• Official CLEP Natural Sciences exam page Exam page

Research confidence: high · Last reviewed 2026-08