The STAR (Standardized Testing and Reporting) program was California’s primary K–12 standards-based assessment system, measuring student proficiency in English Language Arts, Mathematics, Science, and History–Social Science across grades 2–11. While the state transitioned to the Smarter Balanced Assessment Consortium (SBAC) in 2014, STAR scores remain widely referenced for school performance analysis, longitudinal data research, and California educator licensure exam preparation.
This guide covers everything about the STAR assessment: the California Content Standards it measured, score ranges and performance levels, grade-by-grade subject coverage, how scores were reported, and how to use STAR practice tests to prepare for standards-aligned California state exams today.
Facts verified Oct 20, 2026 against Renaissance Learning, Inc.. Dates that have passed are removed automatically.
Facts verified Oct 20, 2026 against Renaissance Learning, Inc.. Dates that have passed are removed automatically.
| Item | Detail | Official source |
|---|---|---|
| Time limit (Star computer-adaptive assessments) | Typically 20 minutes | Renaissance Learning, Inc. |
| Time limit (Star Early Literacy) | About 15 minutes | Renaissance Learning, Inc. |
| Time limit (Star Math) | About 20–30 minutes | Renaissance Learning, Inc. |
| Time limit (Star Phonics diagnostic) | 2–5 minutes per student | Renaissance Learning, Inc. |
| Time limit (Star Phonics screener) | 2–3 minutes per learner | Renaissance Learning, Inc. |
| Passing score | No pass/fail score | Renaissance Learning, Inc. |
| Score release | Results are available instantly | Renaissance Learning, Inc. |
| Testing window (Default district screening windows) | Fall 8/15–9/30; Winter 12/1–1/15; Spring 4/15–5/31 (editable by the district) | Renaissance Learning, Inc. |
Facts verified Oct 20, 2026 against Renaissance Learning, Inc.. Dates that have passed are removed automatically. Practice with the free STAR Assessment practice test on PracticeTestGeeks (7 questions with answer explanations).
ELA was tested in grades 2–11 and covered reading comprehension, vocabulary, literary analysis, and writing conventions. Grades 2–3 used the California Achievement Test (CAT/6). Grades 4–11 used the California Standards Test (CST), with writing assessed separately via the California Writing Standards Test in grades 4, 7, and 10.
Mathematics was assessed at every grade level from 2 through 11 using the CST aligned to California Math Content Standards. High school students took the course-specific tests: Algebra I, Geometry, Algebra II, Summative Math, and Integrated Math.
Science was tested in grades 5, 8, and 10 using the California Standards Test for Science. Each test covered physical, life, and earth sciences with items aligned to the California Science Content Standards.
History–Social Science was tested in grades 8, 10, and 11 and covered California and U.S. history, world history, and geography concepts aligned to state standards.
| Pros | Cons |
|---|---|
| Standards are clearly defined in the California Content Standards documents — every tested skill is listed | High-stakes accountability pressure — school API scores and district funding were tied to STAR results |
| Multiple-choice format eliminates partial-credit ambiguity — each item is right or wrong | One-time annual spring window — there was no retake option within the same academic year |
| Score reports include strand-level breakdowns so students know exactly which sub-areas need work | Science and History–Social Science tested only at selected grade levels, limiting diagnostic utility in non-tested years |
Interactive STAR Assessment Test resources on PracticeTestGeeks, free to start:
Try these questions from our free STAR Assessment Test practice tests. The correct answer and an explanation follow each question.
How many performance levels are used to report student scores on the California Standards Tests?
Answer: C. 5
CST scores are reported across five performance levels: Far Below Basic, Below Basic, Basic, Proficient, and Advanced.
Which subject areas were assessed by the California Standards Tests (CST) at the elementary level?
Answer: B. English Language Arts, Mathematics, Science, and History–Social Science
CSTs assessed English Language Arts, Mathematics, Science, and History–Social Science, though not every subject was tested at every grade level.
A teacher is using the Instructional Planning Report and notices that specific skills are linked to state standards and suggested instructional resources. What is the primary benefit of this feature?
Answer: C. It streamlines the process of connecting assessment data to relevant curriculum standards and targeted teaching materials.
This feature is designed to make data-driven instruction more efficient. By directly linking assessment results to state standards and instructional resources, it helps teachers quickly find relevant materials to address identified skill gaps, ensuring instruction is both targeted and standards-aligned.
Which STAR performance level is considered the standard expectation for grade-level mastery?
Answer: C. Proficient
Proficient is the performance level that indicates a student has met the grade-level standard.
Take the full STAR Assessment Test practice test
For more details, see our Star Reader Quiz: What It Is, How It Works, and How to Prepare guide. For more details, see our star testing guide. For more details, see our star early literacy assessment guide. For more details, see our Assess Using Stars: How Star Testing Works, What Scores Mean, and How to Prepare guide. For more details, see our Online Pratice Stars: How to Practice for the STAR Test Online guide.The STAR (Standardized Testing and Reporting) test was California’s statewide K–12 standards-based assessment program, administered annually from 1998 to 2013. It measured student proficiency in English Language Arts, Mathematics, Science, and History–Social Science using the California Standards Test (CST) and the California Achievement Test (CAT/6) for lower grades. The California Department of Education used STAR results to calculate school Academic Performance Index (API) scores and report Adequate Yearly Progress (AYP) under federal No Child Left Behind requirements.
The STAR test uses a five-level performance scale rather than a pass/fail cutoff. The key benchmark is Proficient, which corresponds to a scaled score of 400–499 on any given subtest. A score of 350–399 (Basic) indicates partial proficiency, while 400 and above is considered meeting the California Content Standard. Scores of 500–600 indicate Advanced performance, which exceeded grade-level expectations.
The STAR program covered four subject areas: English Language Arts (grades 2–11), Mathematics (grades 2–11), Science (grades 5, 8, 10), and History–Social Science (grades 8, 10, 11). High school mathematics was assessed through course-specific tests including Algebra I, Geometry, and Algebra II rather than a single grade-level math test.
No. California discontinued the STAR program after the 2012–2013 school year. Beginning in 2014–2015, the state adopted the Smarter Balanced Assessment Consortium (SBAC) assessments aligned to the Common Core State Standards. STAR test score archives remain available through the California Department of Education for researchers and educators who need longitudinal performance data from the 1998–2013 testing period.
STAR test length varied by grade and subject. The California Standards Test (CST) typically contained 65 multiple-choice items for most subjects, which students completed in one to two class periods (roughly 60–90 minutes). The California Achievement Test (CAT/6) used in grades 2–3 was untimed, administered across multiple sessions, and covered reading, language arts, mathematics, spelling, and science. The STAR writing tests in grades 4, 7, and 10 were administered in a separate 45-minute session.
The Smarter Balanced Assessment Consortium (SBAC) assessments replaced the STAR program for ELA and Mathematics in grades 3–11 starting 2014. For science, California adopted the California Science Test (CAST), aligned to the Next Generation Science Standards (NGSS), beginning in 2018. History–Social Science standardized testing did not receive a direct replacement at the state level following STAR’s discontinuation.
You can access STAR practice questions from two main sources: (1) the California Department of Education STAR Released Test Questions archive, which contains actual past items organized by grade and subject; and (2) PracticeTestGeeks.com, which offers free STAR practice tests modeled after the CST format for reading, mathematics, early literacy, and English language proficiency. Using released items is the most direct preparation method because they reflect the exact item format, difficulty distribution, and content standards weighting used on official STAR assessments.