TExES Chemistry 7-12 Certification

What the TExES Chemistry 7-12 (240) Certification Is

The TExES Chemistry 7-12 (240) exam is one credential in the Texas Examinations of Educator Standards program, governed by the Texas Education Agency through the State Board for Educator Certification and delivered by Pearson under the Texas Educator Certification Examination Program. It is the content-specific assessment a candidate must clear to earn a Texas Chemistry 7-12 classroom teaching certificate, and it is administered as a computer-based test at Pearson VUE sites throughout Texas and at select locations nationwide.

Unlike a generic science license, this exam is built specifically around the Physical Science 7-12 educator standards as they apply to chemistry instruction - meaning every item on the test ties back to a defined competency rather than a broad "general science" curriculum. If you're still mapping out what the credential actually covers before you commit to a study timeline, the TExES Chemistry 7-12 Exam Domains 2026 guide breaks each competency down in more detail than we can here.

Who This Certification Is For

This certification is intended for candidates seeking to teach secondary chemistry in Texas public schools, typically grades 7 through 12. Most candidates reach the exam through one of two paths:

• Enrolled in an approved Texas educator preparation program (EPP): the standard route, where the EPP grants authorization to test after coursework and clinical milestones are met.
• Certification by examination or out-of-state credential review: an alternate path for candidates who already hold related qualifications and are approved to sit for the exam without completing a full traditional EPP sequence.

In either case, a TEA ID is required before you can register. School districts, charter networks, and increasingly STEM-focused campuses across Texas hire chemistry-certified teachers to fill secondary science positions, and the credential is often a prerequisite for AP Chemistry or dual-credit chemistry assignments. For a closer look at where certified teachers actually get hired and what campuses look for, see TExES Chemistry 7-12 Jobs and the companion piece on TExES Chemistry 7-12 Salary Guide 2026.

Exam Format and Registration Mechanics

The TExES Chemistry 7-12 (240) is a computer-administered test consisting of 100 selected-response questions. The full appointment runs five hours: 15 minutes are set aside for the CAT tutorial and compliance agreement, followed by 4 hours and 45 minutes of actual testing time. Some forms include unscored field-test questions used to calibrate future administrations, but your final scaled score is calculated only from scored items - so there's no way to identify which questions "don't count" during the test itself.

Registration costs $116, with no separate member or non-member pricing tier, though Pearson may add service fees depending on how and where you schedule. Because the fee structure and eligibility steps have several moving parts - TEA ID setup, EPP authorization, testing windows - it's worth reading the full TExES Chemistry 7-12 Certification Cost 2026 breakdown and the TExES Chemistry 7-12 Requirements 2026 guide before you book a seat.

The Four Domains at a Glance

Content on the exam is organized into four domains covering 17 competencies total. Domain weighting is not evenly distributed, which has real implications for how you allocate study time:

For a competency-by-competency walkthrough of all four domains, the TExES Chemistry 7-12 Exam Domains 2026: Complete Guide to All 4 Content Areas is the most detailed resource on this topic.

Why Domain II Drives the Exam

At 41% of the exam, Domain II: Matter and Energy is not just the largest domain - it's larger than Domains III and IV combined. It spans characteristics of matter, atomic structure, gas laws, chemical bonding, chemical notation and stoichiometry, solutions, and thermochemistry. Because nearly two out of every five questions on the exam draw from this single domain, it should function as the anchor of your entire preparation plan rather than one topic among many.

• Atomic structure and periodicity: electron configuration, periodic trends, and how they explain bonding behavior.
• Gas laws and states of matter: ideal gas law applications and kinetic molecular theory.
• Bonding models: ionic, covalent, and metallic bonding, plus molecular geometry.
• Stoichiometry and chemical notation: balancing equations, mole ratios, and quantitative problem-solving.
• Solutions and thermochemistry: concentration calculations, calorimetry, and energy changes in reactions.

Scoring, Passing, and Retakes

Scores are reported on a 100-300 scale, and 240 is the minimum passing score - which, notably, is also the number embedded in the exam's own code (240). Because the scale isn't a simple percentage, a raw count of correct answers doesn't translate directly to the reported score; scaling accounts for question difficulty across different test forms. If you want the mechanics of how raw performance converts to that 240 threshold, the TExES Chemistry 7-12 Passing Score 2026 article walks through it in plain terms.

Scores are typically posted about seven days after your test date, released at 10:00 p.m. Central on the published score report dates. If your first attempt doesn't clear 240, you're not out of options - but the retake rules matter:

• Candidates are limited to five attempts per certification exam.
• A mandatory 30-day wait applies between attempts.
• Each attempt requires paying the $116 fee again.

Statewide TEA data for this exam show a 57% first-attempt pass rate and a 64% best-attempt pass rate for the 2024-2025 program year, an improvement over the 49% first-attempt and 52% best-attempt rates recorded in 2023-2024. Those numbers suggest that a meaningful share of candidates who don't pass on the first try do clear the bar on a later attempt - a data point worth exploring further in the TExES Chemistry 7-12 Pass Rate 2026 analysis. If you're trying to gauge realistically how tough this exam is relative to your own background, How Hard Is the TExES Chemistry 7-12 Exam? puts those numbers in context.

Keeping the Certificate Active

A Texas standard certificate earned through this exam is valid for five years. To renew, classroom teachers must complete 150 continuing professional education (CPE) clock hours per five-year period, logged through the ECOS system. At least 80% of those hours must be tied directly to the certificate's subject area - meaning general professional development alone won't satisfy the renewal requirement; the bulk of your CPE hours need to connect back to chemistry content or chemistry-specific pedagogy.

Aligning a Study Plan to the Domain Weights

Because Domain II carries nearly double the weight of Domain III and more than triple the weight of Domain IV, an effective study plan is not one that spends equal time on every domain - it's one that mirrors the exam's own weighting. A simple approach: block your early weeks on Domain II's seven competencies, since mastering stoichiometry, bonding, and thermochemistry calculations takes longer than reviewing pedagogy content, then move into Domain I and Domain III material, and finish with focused review of Domain IV's instructional and assessment concepts alongside cumulative practice testing.

For a compact reference you can revisit in the final days before test day, the TExES Chemistry 7-12 Cheat Sheet 2026 consolidates the must-know facts across all four domains, and the full TExES Chemistry 7-12 Study Guide 2026 lays out a more detailed week-by-week plan than the outline above. Running timed sets on a practice test platform built around this exam's actual format is also one of the more reliable ways to confirm your pacing across a 4 hour 45 minute testing window before you're sitting in the actual Pearson VUE center.

Frequently Asked Questions