- TExES 238 means the TExES Life Science 7-12 (238) certification exam, governed by TEA and administered by Pearson.
- The "238" is simply Texas's fixed test code; it carries no meaning about content or difficulty on its own.
- The exam has 100 selected-response questions across six domains, with a passing score of 240 on a 100-300 scale.
- Cell Structure and Processes, Heredity and Evolution of Life, and Diversity of Life each carry 20% weight - about 60 of 100 questions.
What "TExES 238" Actually Means
When people search "TExES 238 meaning," they're usually trying to confirm exactly what certification they're looking at. Here it is in plain terms: TExES 238 refers to the TExES Life Science 7-12 (238) exam, the state-mandated content certification test that qualifies a candidate to teach life science to Texas students in grades 7 through 12. It is governed by the Texas Education Agency (TEA) and the State Board for Educator Certification, and it is developed and administered by Pearson (Evaluation Systems) as a computer-administered test delivered at Pearson VUE centers.
The number "238" is not a code that stands for anything symbolic - it's simply the identifier TEA assigns to this specific content-area exam within its broader TExES testing system. Other TExES exams have their own three-digit codes; 238 belongs exclusively to Life Science 7-12. If you're comparing options across certification paths, our overview of What Is TExES 238? covers the same ground from a slightly different angle, and TExES 238 Certification walks through how the exam fits into the broader licensure process.
Breaking Down the Name
Understanding the meaning of TExES 238 gets easier once you break the name into its parts:
- TExES - Texas Examinations of Educator Standards, the umbrella testing program TEA uses to certify teachers statewide.
- Life Science - the content domain being certified: biology, genetics, ecology, and related life sciences rather than physical or earth science.
- 7-12 - the grade band this certificate authorizes a teacher to instruct, covering middle school through high school life science courses.
- 238 - the fixed test code TEA and Pearson use administratively to identify this exact exam form.
Put together, the full name - TExES Life Science 7-12 (238) - is the only accurate expansion of the acronym in this context. If you've seen other explanations floating around that mention different fees, different pass rates, or different governing bodies, they are almost certainly describing an unrelated credential that happens to share the same three-digit number. For a more detailed unpacking of the acronym itself, see What Does TExES 238 Stand For? and What Does TExES 238 Mean?.
Why the Same Acronym Causes Confusion
Test-code confusion is common in credentialing because three-digit numbers get reused loosely in casual conversation, forum posts, and outdated blog content. Someone researching "TExES 238" might land on information about exam fees, pass rates, or salary figures that were never true for the Life Science 7-12 exam at all. That's a real problem if you're budgeting for registration or trying to gauge how hard the exam actually is.
The safest approach is to always confirm the full name - TExES Life Science 7-12 (238) - before trusting any fact you read, whether it's about the $116 exam fee, the 240 passing score, or the six content domains. If you want a single source that keeps the details anchored specifically to this exam, bookmark TExES 238 Cheat Sheet 2026: One-Page Review of Must-Know Facts for quick verification.
Key Takeaway
Before using any statistic, fee, or pass rate you find online, confirm it's attached to "TExES Life Science 7-12 (238)" specifically - not a same-numbered credential in a different field.
What the Meaning Implies About Exam Structure
Once you understand what TExES 238 means, the practical question becomes: what does that certification actually require you to do on test day? The exam consists of 100 selected-response questions, some of which are unscored field-test items used to calibrate future forms - only the scored questions count toward your final result. Candidates get a total appointment window of 5 hours: 15 minutes for the CAT tutorial and compliance agreement, plus 4 hours 45 minutes of actual testing time. There is no calculator or reference sheet provided, so recall and application of content knowledge matter more than tool use.
Scoring runs on a 100-300 scale, and the passing score is 240. Results post at 10:00 p.m. Central on the published score report date - not immediately after you finish testing. If you want a deeper breakdown of how the raw questions translate into that scaled score, TExES 238 Passing Score 2026: Exactly What You Need to Pass covers the mechanics in detail.
| Exam Detail | Specification |
|---|---|
| Governing body | Texas Education Agency (TEA) / State Board for Educator Certification |
| Administered by | Pearson (Evaluation Systems), computer-administered test |
| Question count | 100 selected-response items (includes unscored field-test items) |
| Total appointment time | 5 hours (15 min tutorial/agreement + 4 hrs 45 min testing) |
| Passing score | 240 on a 100-300 scale |
| Exam fee | $116, no member/non-member tiers |
| Attempt limits | 5 attempts, 30-day wait between attempts; TEA waiver needed beyond 5 |
Registration itself is valid for 170 days, and if you withdraw, you'll be refunded the exam fee minus a $25 processing charge. For the full registration mechanics and testing calendar, check TExES 238 Exam Dates 2026: Testing Windows, Deadlines & Scheduling and TExES 238 Certification Cost 2026: Complete Pricing Breakdown.
How the Domains Define the Certification
The meaning of a certification exam isn't just its name - it's also what it's actually testing you on. TExES 238 content is built on the 2019 Life Science 7-12 exam framework, which organizes 20 competencies across six domains aligned to the Life Science 7-12 Standards I-XI and the Texas Essential Knowledge and Skills (TEKS):
Domain 1: Scientific Inquiry and Processes (15%)
Covers the methods, tools, and reasoning scientists use to investigate life science questions.
- Experimental design and data interpretation as applied to biological questions
Domain 2: Cell Structure and Processes (20%)
One of three heaviest-weighted domains, covering the biology happening inside and between cells.
- Biomolecules, prokaryotic and eukaryotic cell structures
- Transport, homeostasis, photosynthesis, respiration, cell cycle, and differentiation
Domain 3: Heredity and Evolution of Life (20%)
Genetics and evolutionary biology, tested heavily on this exam.
- DNA/RNA structure, Mendelian and molecular genetics
- Mutation, natural selection, speciation, fossil and molecular evidence
Domain 4: Diversity of Life (20%)
Classification and comparative biology across taxa.
- Taxonomy, plant and animal systems, homeostasis, behavior biology
Domain 5: Interdependence of Life and Environmental Systems (15%)
Ecology and the interactions between organisms and their environments.
Domain 6: Science Learning, Instruction and Assessment (10%)
Pedagogical knowledge specific to teaching life science effectively.
Because Cell Structure and Processes, Heredity and Evolution of Life, and Diversity of Life each carry 20% weight, roughly 60 of the 100 questions come from those three domains combined. That weighting is the single most important thing the exam's "meaning" tells you about where to focus. A full walkthrough of every competency lives in TExES 238 Exam Domains 2026: Complete Guide to All 6 Content Areas.
Who This Certification Is Actually For
TExES 238 exists specifically to qualify educators to teach life science in Texas public school classrooms serving grades 7 through 12 - think middle school life science, high school biology, and related coursework. To sit for the exam, candidates must be approved to test either through an educator preparation program (EPP) or directly by TEA. If this is your first Texas classroom certificate, you'll also need to pass the PPR EC-12 (160) pedagogy exam, since content knowledge and pedagogical knowledge are certified separately.
Once earned, the standard Texas certificate is valid for five years and renews through ECOS with 150 CPE clock hours for classroom teachers - so the "meaning" of holding TExES 238 extends beyond passing a single test into an ongoing professional requirement. If you're weighing whether this credential path fits your career goals, Is the TExES 238 Certification Worth It? Complete ROI Analysis 2026 and TExES 238 Jobs break down where this certification actually leads.
It's also worth understanding eligibility before you register, since approval requirements and program pathways vary. TExES 238 Requirements 2026: Eligibility, Prerequisites & How to Qualify spells out exactly what you need before test day, and What Is A TExES 238? answers the eligibility question from a candidate's first-question perspective.
Turning Meaning Into a Study Plan
Knowing what TExES 238 stands for is step one; knowing how to prepare for it is what actually matters on test day. Because the three 20%-weighted domains dominate the question count, a study sequence that front-loads Cell Structure and Processes, Heredity and Evolution of Life, and Diversity of Life - before circling back to Scientific Inquiry, Interdependence of Life and Environmental Systems, and Science Learning/Instruction/Assessment - reflects the actual test blueprint rather than a generic science review.
Cell Structure and Processes
- Review biomolecules, cell types, transport, and cell cycle content in depth
- Practice released-style questions on photosynthesis and respiration pathways
Heredity and Evolution of Life
- Drill Mendelian and molecular genetics scenarios
- Study natural selection, speciation, and evidence types (fossil and molecular)
Diversity of Life
- Review taxonomy systems and comparative plant/animal biology
- Cover homeostasis and behavior biology across taxa
Remaining Domains + Full Review
- Cover Scientific Inquiry, Interdependence of Life and Environmental Systems, and instructional pedagogy
- Take a full-length timed practice run to simulate the 4 hour 45 minute testing window
A repeatable domain-by-domain approach avoids the common trap of studying life science broadly instead of studying to this exam's specific blueprint. For a structured week-by-week plan built entirely around this test's weighting and question style, see TExES 238 Study Guide 2026: How to Pass on Your First Attempt, and if you want a candid read on how challenging the exam tends to be for candidates, How Hard Is the TExES 238 Exam? Complete Difficulty Guide 2026 is worth reading before you set your timeline. Reviewing statewide outcome data can also help calibrate expectations - see TExES 238 Pass Rate 2026: What the Data Shows.
Whichever schedule you follow, working through realistic practice questions on our TExES 238 practice test platform is the fastest way to see how the domain weighting actually shows up in question form, and repeating full-length runs on the practice site before your appointment builds the pacing needed to finish within the testing window. For candidates enrolled in formal preparation coursework, TExES 238 Training outlines additional structured options, and browsing TExES 238 Certification again near the end of your prep is a useful way to confirm you haven't missed a registration or eligibility step.
FAQ
TExES 238 stands for TExES Life Science 7-12 (238), the Texas certification exam that qualifies educators to teach life science to students in grades 7 through 12. TExES itself stands for Texas Examinations of Educator Standards.
No. This site covers exclusively the Texas Life Science 7-12 (238) exam administered by Pearson under TEA authority. Any information about a differently-named credential using the same number belongs to an unrelated program.
If this is your first Texas classroom certificate, yes - you'll also need to pass the PPR EC-12 (160) pedagogy exam in addition to TExES 238, since content knowledge and teaching pedagogy are certified separately.
The exam covers six domains. Cell Structure and Processes, Heredity and Evolution of Life, and Diversity of Life each carry 20% weight, together making up roughly 60% of the 100 total questions.
You need a scaled score of 240 on the exam's 100-300 scoring scale. Scores post at 10:00 p.m. Central on the officially published score report date, not immediately after your test session ends.