What this rubric measures
The OST Holistic Informative/Explanatory Writing Rubric, Grades 3–5 is the official scoring guide used to evaluate student writing on Ohio State Test (OST) assessments. It is an Holistic rubric that scores responses across 3 distinct criteria, allowing teachers to give precise, targeted feedback on each area of writing.
All 3 scoring criteria
Click any criterion to expand its score level descriptors. The language below is taken verbatim from the official Ohio Department of Education State Test (OST) scoring guide.
1 Purpose, Focus, and Organization
The response is exemplary and reflects original writing throughout that directly addresses a clearly stated topic. It is focused on the audience and purpose of the task. The organizational structure creates clarity and completeness. The response includes most of the following:
- a topic that is strongly maintained throughout,
- little, if any, loosely related material,
- a clearly evident organizational structure that includes a skillfully crafted introduction and conclusion, and
- a logical progression of ideas that reflects a skillful use of transitional strategies to move from one idea to another.
The response is adequate and reflects original writing that reasonable addresses a clearly stated topic. It is generally focused on the audience and purpose of the task. The organizational structure adequately reflects a sense of completeness. The response includes most of the following:
- a topic that is evident throughout,
- some loosely related material,
- an adequate organizational structure that includes an introduction and a conclusion, and
- a progression of ideas that includes basic transitional strategies to move from one idea to another.
The response is limited and reflects some original writing that is related to the topic. It is partially focused on the audience and purpose of the task. The organizational structure is inconsistent. The response includes most of the following:
- a topic that is limited, unclear, or insufficiently sustained,
- some loosely related material,
- an inconsistent organizational structure that has little or no evidence of an introduction or conclusion, and
- an uneven progression of ideas with an inconsistent use of transitions.
The response is minimal and reflects little original writing that may be loosely related to the topic. It reflects little awareness of the audience or purpose of the task. There is a minimally constructed controlling idea with little or no obvious organizational structure. The response includes most of the following:
- a topic that is minimal, confusing, or ambiguous,
- loosely connected or unrelated material,
- little or no evidence of an organizational structure, and
- ideas that are minimally related to the topic with few transitions and little or no progression.
Purpose/Focus/Organization is scored on the topic at Grades 3 to 5. The Argumentation and Informational rubrics at Grades 6 to HS shift the wording to thesis statement.
2 Evidence and Elaboration
The response is exemplary and includes thorough and convincing evidence that is directly related to the purpose of the task. It includes relevant evidence, facts, and details from all sources. Elaboration of evidence is focused, original writing and is clearly connected to the topic. The response includes most of the following:
- strong evidence from all sources that is well integrated throughout, directly related to the task, and references the source(s),
- clear connection between points and evidence,
- effective use of a variety of relevant elaborative techniques (including but not limited to definitions and examples), and
- use of precise academic and domain-specific vocabulary that is clearly appropriate for the task.
The response is adequate and includes support or evidence that is related to the purpose of the task. It includes the use of evidence, facts, and details that are from all sources and generally connected to the topic. Elaboration of evidence is original writing but may be generalized. The response includes most of the following:
- evidence from the sources that may not be specific but is generally integrated into the response and includes some reference to the source,
- adequate connections between points and evidence,
- adequate elaboration on the evidence included, and
- academic and domain-specific vocabulary that is generally appropriate for the audience and purpose.
The response is limited and includes uneven and cursory support and evidence related to the purpose of the task. There is an ineffective use of sources, facts, and details. Elaboration contains limited original writing. The response includes most of the following:
- weakly integrated evidence from sources that may be erratic and may have some irrelevant references,
- repetitive or ineffective use of elaborative techniques, and
- limited or ineffective academic or domain-specific vocabulary.
The response is minimal and includes little or no support or evidence related to the purpose of the task. There is little or no use of the sources and minimal inclusion of facts and details. The response includes most of the following:
- minimal, erroneous, or irrelevant evidence or references from the source material,
- elaboration that has no original text, is vague, lacks clarity or is confusing, and
- minimal or inappropriate academic or domain-specific vocabulary.
Evidence and Elaboration does not include a score 0 descriptor. A response that fails to develop ideas at all collapses to score 1 (minimal) on this dimension.
3 Conventions
The response demonstrates an adequate command of basic conventions. The response includes most of the following:
- a few minor errors in usage, but no patterns of errors,
- a variation of sentence structure, and
- an adequate use of punctuation, capitalization, sentence formation, and spelling.
The response demonstrates a partial command of basic conventions. The response includes most of the following:
- various errors in usage,
- simple sentence structures that do not vary, and
- inconsistent use of correct punctuation, capitalization, sentence formation, and spelling that minimally impacts meaning.
The response demonstrates a lack of command of conventions with frequent and severe errors often obscuring meaning.
The Conventions descriptor is identical across all four OST writing rubrics.
How to score with the OST Holistic Informative/Explanatory Writing Rubric, Grades 3–5.
A practical guide for teachers and norming teams. How to apply each descriptor consistently, the pitfalls that hurt inter-rater reliability, and a workflow for calibrating with colleagues.
Three-dimension holistic, scored independently
- Score Purpose, Focus, and Organization (1 to 4) and Evidence and Elaboration (1 to 4), then Conventions (0 to 2). Sum for the rubric total out of 10.
- Each dimension is scored independently. A response can earn 4 on Purpose/Focus/Organization but only 2 on Evidence/Elaboration, or vice versa.
- Unlike Texas STAAR, OST does NOT zero out other dimensions when one scores 0.
Read each dimension as a paragraph descriptor
- OST rubrics are holistic, the dimension descriptor at each score point reads as a paragraph, not as a checklist of independent criteria. Bulleted sub-elements describe what a response at that score point includes most of.
- Apply the descriptor that best fits the response as a whole on that dimension. A response does not need to hit every bullet to earn the score.
- Start at the top descriptor and work down until the bullets match the response. Move up only when the higher descriptor clearly fits.
Common pitfalls to avoid
- Confusing Informative/Explanatory with Argumentation. Informative/Explanatory presents a topic clearly; it does not require taking a position or addressing opposing views.
- Penalizing students for using only one source. The rubric uses the phrase from all sources. If the prompt provides one source, evidence from one source can earn the top score.
- Awarding score 4 to a response with a clear topic but minimal elaboration. Score 4 requires evidence clearly connected to the topic AND a variety of elaborative techniques.
Tips for norming with your team
- Anchor with 3 to 5 sample responses scored by your most experienced grader before the session.
- Score the first 5 silently, then compare. Discuss any dimension where graders are more than one point apart.
- Re-norm halfway through a long batch. Drift is real.
Notes for the OST Holistic Informative/Explanatory Writing Rubric, Grades 3–5
The OST Grades 3 to 5 Informative/Explanatory rubric is the elementary-grade informational rubric for the Ohio State Test ELA assessment. Students write to inform or explain, not to argue or persuade. The descriptors emphasize a clearly stated topic, organized presentation, and effective use of source-based evidence.
This rubric differs from the Opinion rubric at the same grade band only by replacing opinion with topic in the descriptors. The three-dimension structure and the elaborative-techniques list (definitions, examples) are nearly identical. The Opinion rubric also calls out quotations as an example technique; the Informative/Explanatory rubric does not.
Conventions on OST is identical across all four rubrics. The 0 to 2 scale rewards adequate basic conventions at score 2, partial command at score 1, and lack of command at score 0. Score 0 is reserved for frequent and severe errors that obscure meaning.
OST applies condition codes (which receive no points) to responses that cannot be scored against the rubric, including blank responses, off-topic responses, and responses written in a language other than English.
See this rubric in action.
EnlightenAI scores student writing on this exact rubric, with per-criterion feedback that mirrors how you grade by hand. The sample response below shows how the rubric applies to a real piece of student writing, scored against every criterion.
How lighthouses keep ships safe
Lighthouses keep ships safe in three important ways: they warn ships about dangerous rocks, they help captains know where they are on the coast, and they give sailors something to follow during storms. Without lighthouses, many more ships would have crashed throughout history.
Warning ships about rocks
The article explains that many of the most dangerous parts of any coastline are areas with rocks just under the water. Captains often cannot see these rocks at night or in fog. A lighthouse stands on those dangerous spots and shines a bright light. The light tells captains to steer their ships away. The article says some lighthouses have flashed warnings for more than 200 years.
Helping captains know where they are
Each lighthouse has its own pattern of light. Some flash quickly, others slowly, and some show different colors. The article explains that captains carry maps that show every lighthouse and its pattern. When a captain sees a flashing light, they can match the pattern to the map and know exactly where their ship is. This is called a coastal location aid.
Guiding ships through storms
During storms, the article describes how clouds and rain make it hard to see anything. Lighthouses help by shining lights powerful enough to cut through bad weather. Sailors say a lighthouse beam can be seen up to 24 miles away on a clear night and many miles even in a storm. Following a lighthouse beam can guide a ship to the safe entrance of a harbor.
Conclusion
The article shows that lighthouses do three big jobs at once: warning about rocks, marking locations, and guiding ships through storms. Even today, with GPS and computers, lighthouses still help save lives at sea.
Clearly stated topic, evident organizational structure
Topic is stated in intro and maintained throughout. Three reasons each get a body paragraph with topic sentences and transitions. Introduction and conclusion are crafted. Logical progression of ideas reflects skillful use of transitional strategies. Meets the score 4 descriptor.
Adequate evidence, generalized elaboration
Evidence drawn from the article (200 years, light patterns, 24-mile beam) integrated with reference. Elaboration is original writing. Vocabulary is grade-appropriate but not consistently precise (could use more domain-specific terms). Generally connected to the topic.
Adequate command of basic conventions
Sentence structure varies, punctuation, capitalization, and spelling are accurate, and minor errors do not pattern. Meets the score 2 descriptor on the OST Conventions dimension.
Score this rubric consistently, with the feedback students actually use
EnlightenAI is trained on your standards and your exemplars, then scores at the speed of your classroom.
Trained on your rubric
Upload this rubric, or any custom one, and the AI learns your exact criteria, descriptor language, and score level boundaries.
Per-criterion feedback
Students receive specific, actionable comments tied to each criterion, exactly the way you'd grade by hand.
Built for K–12 schools
Roster sync, FERPA-aligned data handling, and per-school configuration so every campus uses the same standards.
About the OST Holistic Informative/Explanatory Writing Rubric, Grades 3–5
What is the Ohio State Test Informative/Explanatory Writing Rubric for Grades 3 to 5?
How is this different from the OST Opinion rubric at the same grade band?
How is this different from the OST Informational rubric at Grades 6 to HS?
Is this rubric the official version from ODE?
Where can I find the source document?
Can EnlightenAI score student writing using this rubric?
Use this rubric in EnlightenAI
Train EnlightenAI on the OST Holistic Informative/Explanatory Writing Rubric, Grades 3–5 and start scoring student writing, with consistent per-dimension feedback, in a single class period.