- The TExES Chemistry 7-12 (240) passing score is 240 on a 100-300 scaled score range.
- The scaled score is calculated from scored items only; unscored field-test questions don't count toward 240.
- Domain II, Matter and Energy, is 41% of the exam and the single biggest lever for reaching 240.
- You get five attempts total, with a mandatory 30-day wait between each one.
The Passing Score Number Explained
If you're preparing for the TExES Chemistry 7-12 (240) exam, the "240" in the certification name isn't a coincidence - it's the exact minimum scaled score the Texas Education Agency requires to pass. Scores on this exam are reported on a 100-300 scale, and 240 is the cut score that separates a passing performance from a failing one. There's no rounding grace period, no partial credit adjustment after the fact, and no separate passing threshold for different testing windows. Whether you sit for the exam in January or November 2026, the target stays the same: 240.
This matters because candidates sometimes assume the passing score is a percentage of correct answers (like "70% correct means you pass"). That's not how TExES scoring works. Understanding the actual mechanics behind that number will help you set a realistic study target rather than guessing at how many questions you can afford to miss. For a full breakdown of what's tested, see the TExES Chemistry 7-12 Exam Domains 2026 guide.
Scaled Score vs. Raw Score: Why 240 Isn't 240 Questions
The 240 passing score is a scaled score, not a raw count of correct answers. Your raw score - the number of scored questions you answered correctly - gets converted onto the 100-300 scale through a statistical process that accounts for the specific set of questions on your form. This is standard practice for large-scale certification testing and it means two candidates who both answered, say, 78 out of 100 questions correctly on different test forms could theoretically end up with slightly different scaled scores, depending on the difficulty of the items they received.
Here's the detail that trips people up: not every question on your screen counts toward your score. Some forms include unscored questions that are being evaluated for potential use on future administrations. You won't know which questions are unscored, so the only sound strategy is to treat every question as if it counts - because the ones that do count are indistinguishable from the ones that don't. Your final scaled score is calculated using only the scored items.
Key Takeaway
Don't try to guess which questions are "throwaway" field-test items. Answer every question with full effort; the scoring engine sorts out what counts, and you can't identify it during the test.
How Domain Weight Shapes Your Path to 240
Because the passing score is scaled rather than domain-specific, there's no separate "you must pass Domain III" rule - your overall performance across all 100 questions determines your final number. But that doesn't mean every domain deserves equal study time. The exam framework, which carries a 2022 TEA copyright, organizes content into four domains covering 17 competencies aligned to the Physical Science 7-12 educator standards, and the domains are weighted very unevenly.
| Domain | Weight | Competencies |
|---|---|---|
| Domain I: Scientific Inquiry and Processes | 24% | 001-004 |
| Domain II: Matter and Energy | 41% | 005-011 |
| Domain III: Chemical Reactions | 23% | 012-015 |
| Domain IV: Science Learning, Instruction and Assessment | 12% | 016-017 |
With Domain II accounting for 41% of the exam - nearly double any other domain - it's the single most influential area for whether your raw score lands you above or below 240. If you're strong across Domains I, III, and IV but shaky on Domain II's characteristics of matter, atomic structure, gas laws, bonding, chemical notation and stoichiometry, solutions, and thermochemistry, you're leaving the largest chunk of available points on the table.
Domain II: Matter and Energy (41%)
This domain anchors the entire exam and should anchor your study hierarchy too. Candidates need fluency in:
- Atomic structure and periodic trends, using the on-screen periodic table effectively
- Gas laws and their quantitative applications
- Bonding models (ionic, covalent, metallic) and molecular geometry
- Chemical notation, formula writing, and stoichiometric calculations
- Solution chemistry, concentration units, and colligative properties
- Thermochemistry, including energy changes in reactions and phase transitions
For a competency-by-competency breakdown of all four domains, the TExES Chemistry 7-12 Exam Domains 2026: Complete Guide to All 4 Content Areas walks through each one in detail. And if you're still weighing how demanding this exam is overall relative to your background, How Hard Is the TExES Chemistry 7-12 Exam? covers that question directly.
What Your Score Report Actually Shows
Scores are typically posted about seven days after your test date, released at 10:00 p.m. Central on the published score report dates. Your report will show your scaled score on the 100-300 scale alongside the 240 passing threshold, so you'll know immediately whether you cleared it and by how much. Many candidates also want to know how their raw performance broke down by domain - score reports for TExES exams generally provide a breakdown by content domain, which can help you identify weak spots if you need to retest.
Because the exam appointment includes a 15-minute CAT tutorial and compliance agreement plus 4 hours 45 minutes of testing time, pacing matters too. With 100 questions and roughly 4 hours 45 minutes of testing time, you have an average of nearly 3 minutes per question - generous by most certification-exam standards, but easy to squander if you get stuck rereading a stoichiometry problem three times. Practicing under realistic timing conditions, not just untimed review, is part of translating content knowledge into an actual scaled score above 240.
Retake Rules If You Fall Short
Not reaching 240 on your first attempt isn't the end of the road, but it does come with structure. Candidates are limited to five attempts per certification exam, and there's a mandatory 30-day waiting period between attempts. That waiting window is actually useful: it forces a real study reset rather than a rushed same-week retake, and it gives you time to revisit your weakest domain with fresh practice questions rather than just rereading notes.
Statewide data reported by TEA for the 2024-2025 program year showed a 57% first-attempt pass rate and a 64% best-attempt pass rate (on 81 examinees), following a 49% first-attempt and 52% best-attempt rate in 2023-2024 (on 71 examinees). Those numbers say two things worth internalizing: first, a meaningful share of candidates don't clear 240 on the initial try, so treating this as a "read the textbook once" exam is risky; second, best-attempt rates run higher than first-attempt rates, meaning focused retakes do work for people who use the 30-day gap productively. For more on how these figures compare across recent years, see the TExES Chemistry 7-12 Pass Rate 2026: What the Data Shows.
Key Takeaway
If you don't hit 240, use the required 30-day gap to target your specific weak domain - especially Domain II - rather than restudying everything evenly.
Targeting 240: A Domain-Weighted Study Sequence
Because Domain II is worth nearly double the next-largest domain, your study calendar should reflect that imbalance rather than splitting time evenly across all four domains. A domain-weighted approach - not a generic weekly template - gets you closer to 240 faster.
Domain II: Matter and Energy
- Master atomic structure, periodic trends, and bonding models
- Drill gas law calculations and stoichiometry problems until they're automatic
- Review solution chemistry and thermochemistry with practice problem sets
Domain I: Scientific Inquiry and Processes
- Review lab safety, experimental design, and data analysis conventions
- Practice interpreting graphs, tables, and experimental scenarios
Domain III: Chemical Reactions
- Cover reaction types, equilibrium, kinetics, and acid-base chemistry
- Connect reaction concepts back to Domain II's stoichiometry skills
Domain IV plus full-length practice
- Review science learning, instruction, and assessment principles
- Take timed full-length practice tests using the on-screen calculator and periodic table
Note that the exam supplies an on-screen periodic table, a physical constants page, and an on-screen scientific calculator - so your practice sessions should use equivalent tools rather than a personal calculator you won't have on test day. Getting comfortable navigating these on-screen resources under time pressure is a small but real factor in whether you clear 240. For a structured, first-attempt-focused walkthrough of this whole process, see the TExES Chemistry 7-12 Study Guide 2026: How to Pass on Your First Attempt, and pair your review with realistic practice questions on our practice test platform.
Frequently Asked Questions
The minimum passing score is 240 on a scaled score range of 100 to 300. This scaled score is derived from your correct answers on scored items only, not a raw percentage of the 100 total questions.
No. Some forms include unscored questions used to evaluate items for future test administrations. You cannot identify which questions are unscored, so every question should be answered as though it counts.
You're allowed up to five attempts per certification exam, with a required 30-day waiting period between each attempt.
Scores are typically posted about seven days after your test date, released at 10:00 p.m. Central on the official score report dates published by the testing program.
Domain II, Matter and Energy, carries 41% of the exam - by far the largest share - covering atomic structure, gas laws, bonding, stoichiometry, solutions, and thermochemistry. It should be the anchor of your study plan.