CoGrader is an AI-powered essay grading platform that helps K-12 English Language Arts teachers save up to 80% of their grading time. By combining rubric-based AI grading with educator oversight, CoGrader delivers instant first-pass feedback and grades on student writing assignments, so teachers can return results in days instead of weeks. Used in over 1,000 schools across the United States, CoGrader supports the full grading workflow. Teachers import student assignments directly from Google Classroom, Canvas, or Schoology. The AI evaluates each essay against the selected rubric and generates detailed, criteria-specific feedback covering areas like claim and focus, organization, evidence and support, and language conventions. Teachers then review, adjust, and export finalized grades and comments back to their LMS with a single click. CoGrader's rubric library includes 30+ templates aligned to state standards and Common Core, covering argumentative, informative, narrative, and analytical essay types from 6th grade through higher education. Teachers can also build fully custom rubrics or use AP-specific scoring criteria, including DBQs and LEQs. For districts preparing students for high-stakes state assessments like STAAR, CAASPP, or other standardized writing tests, CoGrader offers assessment-specific rubrics that align practice with the real exam format. Beyond grading, the platform provides class analytics dashboards that help teachers identify patterns in student performance and plan targeted instruction. An AI detection feature flags potentially AI-generated content to support academic integrity policies. CoGrader also supports multilingual grading, evaluating and providing feedback in the same language as the student submission. Student data privacy is a core priority. CoGrader follows FERPA guidelines, sends only anonymized data to its AI models, and does not use student work to train its algorithms. The platform uses Google's OAuth2 for secure authentication. Whether you're an individual ELA teacher looking to reclaim your evenings or a district evaluating writing benchmarks at scale, CoGrader turns weeks of grading into hours while keeping the teacher in control of every final grade and comment.