Texas — Science — Grade 8 — Summative Assessment (STAAR)
Practice test built to the official Texas Science assessment blueprint for Grade 8 — same domains, same weighting, instant scoring with an explanation for every question.
Content updated September 2026
- Built to the real blueprintSame domains at the same weight as the official test.
- Every answer explainedInstant scoring, with the reasoning for each question.
- Miss it, master itWrong answers come back as a short scored practice set until you fix them.
- 55
- Questions
- 240
- Minutes
- 33/ 55
- Qualifying score
- No negative marking
- On-screen calculator
- Question formats
- Multiple Choice
What’s on the test
The 55 questions mirror the official blueprint below — every domain appears at its real weight, so your score predicts readiness for the actual administration.
Texas — Science — Grade 8 — Summative Assessment (STAAR)
This summative assessment measures student mastery of grade 8 science standards in Texas. The exam evaluates knowledge across four key content areas through a balanced set of multiple-choice and technology-enhanced items. Performance on this assessment informs instructional planning and student readiness for high school science.
| Content Standard | Items | Percentage |
|---|---|---|
| Physical Science | 8 | 20% |
| Life Science | 8 | 20% |
| Earth and Space Science | 8 | 20% |
| Engineering Design | 8 | 20% |
| Total | 42 | 100% |
Frequently asked questions
How many questions are on this Science practice test?
This practice test has 55 questions (multiple choice), matched to the domains and weights of the official blueprint shown above.
How long is the test?
You get 240 minutes, with a live countdown timer on screen — the same time pressure as a real computer-based administration.
Is there negative marking?
No — there is no negative marking on this practice test, so it always pays to attempt every question.
What score counts as passing?
The qualifying score on this practice test is 33 of 55 marks. Your report shows your score and a question-by-question breakdown with explanations the moment you submit.
Can you use a calculator?
Yes — an on-screen calculator is built into the test player, the same way computer-based state assessments provide one.
How do I start, and what does it cost?
Scroll down and press Start — the test runs right on this page, and scoring is instant. Preview questions are free; full-length attempts with detailed score reports are part of a PrepGro plan.
Ready to see where you stand?
The test runs right below — instant score, every answer explained.