Why AI is used
AI can draft grades and feedback, compare many responses, and prepare a first analysis of class-wide patterns that would otherwise require substantial instructor time.
Role of AI
Privacy, cost, model capability, hardware, and institutional policy do not have one universal answer. LLMGrader lets the instructor choose how AI is provided while retaining responsibility for every grade, feedback decision, and instructional conclusion.
Instructor-led, AI-assisted
AI can draft grades and feedback, compare many responses, and prepare a first analysis of class-wide patterns that would otherwise require substantial instructor time.
The instructor reviews and can edit every suggested grade, feedback response, common-theme analysis, and interpretation of progress.
Student identifiers are not sent to the model. When a cloud model is selected, answer text and the grading materials needed for the task are sent to that provider.
A practical private option
A gaming PC or a recent Apple-silicon Mac can run useful models locally through Ollama. No student response data needs to be sent to a model provider, and there is normally no per-request cloud charge.
Local models are especially practical when the questions, rubrics, and student answers fit comfortably within the model’s context window and the instructor provides clear grading guidance. A smaller or medium model can often handle routine grading and analysis effectively; larger or more difficult assignments may benefit from a more capable local model or a frontier cloud model.
The desktop version connects directly to Ollama running on the same computer. An institution can instead host a compatible model service behind its firewall and make it available through LLMGrader’s Custom Endpoint option.
Local means local. With Ollama running on the instructor’s desktop, prompts, rubrics, solutions, and student answer content remain on that computer rather than being transmitted to a cloud model provider.
Refine questions and solutions, develop rubrics, and check whether grading criteria are clear.
Evaluate short and medium-length responses using the instructor’s solution, rubric, base prompt, and grading guidance.
Identify recurring strengths, misconceptions, incomplete explanations, and areas for instructional follow-up across a class.
Compare completed assessments to examine conceptual development by a student and across the class.
Realistic starting points
These examples are starting points rather than guarantees. Requirements depend on model architecture, quantization, context length, operating-system use, and whether memory is shared or dedicated.
Smaller models in roughly the 3B–4B range are realistic starting points for many routine tasks.
Quantized models in roughly the 7B–14B range may be practical, depending on context length and other applications.
Larger quantized models in the 20B–30B range become feasible, although speed varies by model and context.
Quantized models in roughly the 3B–8B range are generally the most practical choices.
Quantized models in roughly the 12B–27B range may fit, depending on model architecture and context length.
A capable local model in roughly the 27B–30B range can be practical for grading and analysis work.
Model file size is only part of the requirement. The computer also needs memory for the operating system, LLMGrader, the active context, and temporary working space. Quantized models reduce memory requirements, sometimes with a tradeoff in quality or speed.
When local is not the best fit
Maximum local privacy and predictable cost. Best when the available hardware can run a model capable of the intended task.
Private and practicalAn organization can operate an approved compatible model service behind its firewall, with its own access, retention, and auditing policies.
Organizational controlCloud services provide broad access to free, inexpensive, and frontier models without requiring local model hardware.
Maximum model choiceLLMGrader supports OpenRouter, OpenAI, Anthropic, Custom Endpoints, and—in the desktop version—Local Ollama and Ollama Cloud. The application’s Settings screen provides setup guidance and official API-key links for each option.
Responsible use
Test a representative set of answers before grading a full class. Consider accuracy, consistency, preservation of nuance, response time, context capacity, and whether the feedback is appropriate for the course and assignment.
Follow institutional policy. Before using any AI service with student work, review your institution’s requirements for artificial intelligence, student data, privacy, approved vendors, and disclosure. LLMGrader provides choices; it does not determine whether a particular model or use is permitted.