TExES Math 4-8 (115) Practice Test — Adaptive Prep
Targeted, adaptive preparation for the TExES Mathematics 4-8 certification exam, test code 115. Item Response Theory placement, 1,795 calibrated questions across all six TEA competency domains, and a pass-or-refund guarantee on the Retaker Bundle.
About the TExES Math 4-8 (115)
The TExES Mathematics 4-8 (115) certifies teachers to teach math in grades 4 through 8 in Texas public schools. The exam has 90 scored questions and a 5-hour time limit; most test-takers finish in roughly 3 hours. The passing scaled score is 240 on a 100–300 scale, set by the State Board for Educator Certification (SBEC).
Unlike the 7-12 (235), the 4-8 does not test calculus or advanced number theory. Instead, it goes deep on middle school content — fractions, ratios, linear functions, geometry, statistics — and devotes 28% of the exam to how students learn mathematics and how to assess that learning. Many candidates underestimate the pedagogy domains (D5 and D6) and fail on them.
TEA competency domains
How adaptive prep is different
Most TExES 4-8 prep stops at a static question bank and a study guide. You work through material in order, re-reading chapters on topics you already know and moving too fast past topics where you have real gaps. The result is wasted hours and a score that stalls.
QuantegyAI uses Item Response Theory — the same statistical model the real exam vendors use — to estimate your ability on each of the six TEA domains independently. Every answer updates the model. The next question is drawn from your upper bound of mastery: just hard enough to confirm or revise the estimate. After about 25 placement questions, you have a calibrated ability estimate per domain and a personalized study plan that tells you exactly where your prep hours will have the most impact.
Scores update after every question — not at the end of a session. You can see your pass probability in real time as you work, which is something no static prep product does.
What’s in the question bank
- 1,795 calibrated questions aligned to the TEA 4-8 competency framework
- Full coverage of all six domains including the pedagogy-heavy D5 and D6
- Worked explanations on every question — not just an answer key
- 40+ interactive review widgets covering algebra tiles, number lines, coordinate planes, geometric transformations, and statistical displays
- Full-length mock exams with score reports broken down by domain
- Real-time IRT score updates after every question so you always know where you stand
Pricing
Pass-or-refund guarantee
Complete the Retaker Bundle program and still don’t pass? We refund in full. The Full Access Pass ($49) includes a 7-day satisfaction refund before you’ve answered 20 questions. See full refund terms →
Who built this
QuantegyAI was built by Dr. Mienie Scholtz, a mathematics professor and active reviewer for the Texas Instructional Materials Review and Approval (IMRA) process. The question bank, adaptive engine, and every review widget are built in-house — not licensed from a third-party generator.
Frequently asked questions
How many questions are on the TExES Math 4-8 (115)?
The exam has 90 scored questions and a 5-hour time limit. Most test-takers finish in roughly three hours. The exam is organized into six competency-aligned domains set by the Texas Education Agency.
What is the passing score?
The passing scaled score is 240 on a 100–300 scale, set by the State Board for Educator Certification. This corresponds to roughly 60% raw correct.
Is the TExES 4-8 harder than the TExES 7-12?
The 4-8 is narrower in advanced mathematics (no calculus, no complex numbers) but devotes 28% of its weight to pedagogy — how students learn and how to assess learning. Many retakers who have strong content knowledge still fail on the D5/D6 pedagogy domains. The 7-12 is more mathematically demanding at the upper end; the 4-8 is more demanding in pedagogical content knowledge.
Can I take the placement test before I buy?
Yes. The placement test is free and gives you a calibrated estimate of your current ability on every TEA domain, plus a recommended prep length. You only pay when you start the full adaptive practice loop.
How long should I prepare?
For education majors with solid grade 4-8 content knowledge, 4–8 weeks of consistent adaptive practice (3–5 sessions per week, 30–45 minutes each) is typical. The placement test gives you a personalized estimate on day one.
Does QuantegyAI cover both TExES 4-8 and 7-12?
Yes. Both exams share the same adaptive engine and question pool infrastructure. If you hold or are pursuing multiple certifications, your progress on each exam tracks separately.