TExES 238 Jobs

What Jobs Does TExES 238 Certification Open Up?

The TExES Life Science 7-12 (238) exam is the credentialing gate for teaching biology-based science in Texas secondary schools. Passing it, alongside the required PPR EC-12 (160) pedagogy exam, allows a candidate to hold a standard Texas teaching certificate in Life Science for grades 7 through 12. That single credential is the qualifying document districts check when they post openings for biology, environmental science, or general life science teaching positions at the middle and high school levels.

Unlike broad-field certificates that bundle physics, chemistry, and biology together, TExES 238 is content-specific. That specificity matters for job matching: a district hiring for a dedicated Biology I or Biology II section, an AP Biology track, or a middle school life science course will look for exactly this certification code on an applicant's credential file. If you're still deciding whether this exam (versus a composite science certificate) fits your career goals, the ROI analysis of TExES 238 certification walks through that comparison in more depth.

Classroom Roles: Middle School vs. High School Life Science

Because the certificate spans grades 7-12, holders are eligible for two distinct tiers of classroom assignment:

• Middle school life science teacher (grades 7-8): Covers foundational cell biology, ecosystems, heredity basics, and introductory evolution concepts tied to the Texas Essential Knowledge and Skills (TEKS) for these grade bands.
• High school biology teacher (grades 9-12): Teaches Biology I, and in many districts, upper-level electives such as Anatomy and Physiology, Environmental Systems, or AP/IB Biology, depending on the district's course catalog and the teacher's additional endorsements.

Some districts also use TExES 238-certified teachers to lead interdisciplinary science teams, mentor new science staff, or coordinate lab safety protocols across a science department - responsibilities that build naturally on the content mastery the exam verifies. For a domain-by-domain breakdown of exactly what that content mastery looks like, see the TExES 238 Exam Domains complete guide.

Who Hires TExES 238-Certified Teachers

Employers fall into a few predictable categories:

• Texas public school districts - the primary employer base, since the certificate is issued and enforced by the Texas Education Agency (TEA) specifically for Texas public school classrooms.
• Texas charter schools - many operate under the same certification requirements as traditional ISDs for core content areas like life science.
• Educator preparation programs (EPPs) - universities and alternative certification programs sometimes hire certified life science teachers as clinical supervisors or adjunct instructors once they have classroom experience.
• Private and parochial schools - certification isn't always mandated here, but holding a TEA-recognized credential is frequently viewed as a hiring advantage.

Because candidates must be approved to test either by an educator preparation program or directly by TEA, most people encounter this exam already embedded in a hiring or certification pipeline - student teaching, an alternative certification cohort, or a district-sponsored intern program. That approval step is one of several eligibility details covered in the TExES 238 requirements guide.

Beyond the Classroom: Related Roles

While classroom teaching is the direct outcome of TExES 238 certification, the underlying content expertise - cell biology, genetics, evolution, ecology, and science instruction methodology - also supports adjacent roles some certified teachers move into over time:

• Science department chair or curriculum coordinator
• Instructional coach for secondary science teams
• Tutoring or test-prep specialist for biology and life science content
• Textbook or curriculum review contributor for life science materials aligned to the TEKS

These pathways typically build on classroom experience rather than replace it, since Texas certification and most district leadership roles still expect direct teaching history first.

Getting From Exam Day to Job Offer

Understanding the exam mechanics helps you plan a realistic timeline toward employment. The TExES 238 is a 100-question, computer-administered test delivered through Pearson VUE testing centers, with a total appointment time of 5 hours - 15 minutes for the tutorial and compliance agreement, plus 4 hours 45 minutes of testing. The $116 exam fee has no member or non-member pricing tiers, and registration stays valid for 170 days, giving you a defined scheduling window once you're approved to test.

Not every question counts toward your score - some are unscored field-test items mixed in to evaluate future exam content, so there's no way to identify which items are "safe" to guess on versus which carry real weight. That's one more reason to prepare broadly across all six domains rather than betting on a narrow subset. For a full walkthrough of scheduling logistics, refund rules, and appointment windows, see the TExES 238 exam dates guide, and for the exact fee structure, the TExES 238 certification cost breakdown lays out every dollar amount.

If you don't pass on the first try, you're not stuck: candidates get five attempts total, with a mandatory 30-day wait between attempts, and can request a TEA test-limit waiver if they need to test beyond five times. Scores post at 10:00 p.m. Central on the published score report date, so you'll know exactly when to check your account rather than guessing.

Domain Knowledge That Shows Up on the Job

The six domains tested on TExES 238 aren't abstract exam categories - they map directly onto what you'll teach every day in a Texas life science classroom.

The remaining three domains - Scientific Inquiry and Processes (15%), Interdependence of Life and Environmental Systems (15%), and Science Learning, Instruction and Assessment (10%) - round out the instructional skill set: lab safety and experimental design, ecosystem and environmental content, and the pedagogical know-how to translate content into standards-aligned lessons. A complete breakdown of all six areas, including specific competencies within each, is available in the TExES 238 exam domains guide.

A Focused Prep Timeline Before You Apply

If you're targeting a hiring season - many Texas districts post life science openings in spring for fall contracts - working backward from that deadline helps you sequence study time around the exam's heaviest domains.

This kind of structured sequencing - heavier domains first, supporting domains last, with a full-length timed run-through before test day - is the core of any solid preparation plan. For a more detailed week-by-week study framework, the TExES 238 study guide for 2026 expands on this approach, and the TExES 238 cheat sheet is useful for last-week review. You can also run realistic practice sessions on our TExES 238 practice test platform to gauge readiness before scheduling your appointment.

Career Growth After Certification

Once certified and hired, TExES 238 holders maintain their credential through Texas's standard renewal cycle: certificates are valid for five years and renew through ECOS with 150 CPE clock hours for classroom teachers. That renewal requirement keeps certified teachers engaged in ongoing professional development, which districts often value when considering candidates for department leadership, mentor-teacher stipends, or curriculum committee assignments.

For teachers weighing whether this specific certification path makes long-term career sense compared to other secondary science credentials, the TExES 238 salary guide and the broader ROI analysis of TExES 238 certification are useful starting points. And if you're just getting oriented to the exam itself before thinking about jobs at all, What Is TExES 238? and the TExES 238 certification overview cover the fundamentals, while the main practice test site offers domain-specific question sets to help you self-assess before committing to a study plan.

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