CoGrader
CoGrader is an AI essay grader for K-12 teachers. It scores written work against a chosen rubric and drafts feedback per criterion, claiming 80% less grading time while the teacher still reviews and approves every grade before publication.
What is CoGrader?
CoGrader is an AI essay grader for K-12 education: it produces a first pass on written work and leaves the decision to the teacher. The vendor's own framing is blunt: the rubric defines the answer, not the AI. The workflow has five steps: import the submissions, choose a rubric, get a first pass on every student, review, adjust and send back, then read the class-level trends. Setting up a batch is described as taking around ten minutes. Rubrics are the core of the product. The library holds more than 500 of them, drawn from state standards and exam boards: Texas STAAR and TEKS, Florida B.E.S.T., California CAASPP Smarter Balanced, New York Regents and NGLS, AP formats (DBQ, LEQ, SAQ, AP Lang, AP Lit), IB, CCSS, Arkansas ATLAS and Ohio, with GCSE marking also mentioned. A teacher can instead upload their own rubric or marking scheme as it stands. For each paper, CoGrader returns a score per criterion, structured Glow and Grow feedback, a grammar report and an originality report covering plagiarism and AI-written text. The class view aggregates the average, the average per criterion, recurring areas for growth with the number of students concerned, pupils ready for extension work and pupils to revisit. Integrations run both ways with Google Classroom, Canvas and Schoology; Brightspace, Microsoft Teams, Blackboard, Eduphoria and DMAC Solutions are also listed. Without an LMS, teachers upload PDF, DOCX or photo files and export a CSV gradebook. A dedicated Chrome extension covers Canvas, and another covers Schoology. Essays can be assessed in any language, though the interface is English only. The claimed scale is 100,000+ teachers, 15,000+ schools across all 50 states, 2.4M+ essays graded and 80% of grading time saved. Backing claimed includes UC Berkeley SkyDeck, Microsoft for Startups, Google for Startups and a federal IES Seedlings to Scale grant. Compliance claimed covers FERPA, COPPA, SOPIPA, New York Ed Law 2-d, SOC 2 Type I from January 2024 and NIST 1.1. Third-party models come from OpenAI, Anthropic and Meta. AI-writing detection is limited to School and District subscriptions, and the vendor concedes that no detection is 100% reliable. The company says it was founded in 2023 and built with teachers, in California.
What it does
- Grade a batch of essays against a rubric and propose a score for each criterion
- Draft individual feedback tied to each criterion of the rubric
- Import a whole class from Google Classroom, Canvas or Schoology in one click
- Push grades and comments back into the LMS gradebook
- Read handwritten papers from a photograph or a scan
- Flag plagiarism and AI-written text in an originality report
- Surface class-wide trends per criterion to shape the next lesson
When to use CoGrader / When not to
A quick filter to help you decide if CoGrader is the right fit.
When to use CoGrader
- Middle- and high-school English and humanities teachers grading batches of essays and open-ended answers
- Elementary teachers who want criterion-based written feedback rather than a bare mark
- Teachers preparing state and exam-board assessments: STAAR, B.E.S.T., CAASPP, New York Regents, AP, IB or GCSE
- Curriculum coordinators, principals and multi-school districts that need consolidated dashboards and per-school analytics
- Language teachers and tutors, since essays are assessed in whatever language they were written in; students can also self-check drafts with the free Grade My Essay, College Essay Grader and AI Paper Rater tools
When not to use CoGrader
- Maths, science calculations or auto-graded quizzes: CoGrader works on writing and open-ended answers, not numerical exercises
- Schools outside the United States that require local data residency, and European institutions that need GDPR commitments, since everything stays on US soil
- Anyone hoping to hand grading over entirely: the terms disclaim accuracy and the final grade remains the teacher's, so every output needs a human read
- Individual teachers who need Canvas or Schoology sync, a shared rubric library or AI-writing detection, all of which are reserved for School and District plans
- Users who need a non-English interface, and minors: the UI is English only and an account holder must be 18 or of local legal majority
How to use CoGrader
A typical end-to-end flow, from setup to results.
- Create a teacher account for free; no credit card is asked for to start
- Connect your LMS: Google Classroom on every plan, Canvas and Schoology on School or District plans; for Canvas you can also install the Chrome extension and link your Canvas account
- Import an assignment and its batch of submissions in one click, or upload PDF and DOCX files or pasted text
- For handwritten work, photograph or scan the pile of papers
- Pick a rubric from the state-standards library, or upload your own
- Run the batch: scores per criterion and comments come back in a few minutes
- Open the side reports: grammar, plagiarism and AI-written text detection
- Read each paper, adjust the score and the comments, then approve
- Send grades and feedback back to the LMS in one click, or export a CSV
- Open the class view to spot the recurring areas for growth and prepare the next lesson
Pros & Cons
Pros
- Claimed 80% time saving, with testimonials describing a class graded in about an hour instead of several days
- The teacher keeps the final say: no grade leaves the tool without their approval
- Unusually deep coverage of US standards, all 50 states plus AP and IB, with 500+ ready-made rubrics
- Generous permanent free plan of 100 student essays a month, with no credit card
- Handwritten papers are accepted, presented as a differentiator on the comparison page, and essays can be assessed in any language
- Contractual no-training commitment on student data, extended to the model providers, backed by a SOC 2 Type I attestation and documented 100% US data residency
- Public-sector-friendly purchasing with purchase orders, a W-9 form and signature of the school's data privacy agreement; the Advocate program also gives selected teachers the School plan free for a year
Cons
- No postal address and no contact page anywhere on the site: no legal notice, no team page, no named executive
- No mention of the GDPR at all, hence no Article 27 representative and nothing a European institution can rely on
- Hosting is US-only, on Google Cloud us-central1 in Iowa, which rules the tool out wherever EU residency is required
- Key features are gated behind School and District plans: Canvas, Schoology, AI-writing detection and the shared rubric library
- Essay quotas on individual plans: 100 a month on the free tier, 350 a month on Standard, and an English-only interface
- AI and plagiarism detection that the vendor itself admits is not 100% reliable, with a real risk of an unfounded accusation
- Audience figures that contradict each other across the site (100,000+ teachers and 15,000+ schools on the homepage against 50,000+ and 1,000+ on the comparison page), a subprocessor list disclosed only on request, and terms heavily tilted towards the vendor with broad warranty and liability exclusions under Delaware law
Pricing & Plans
A permanent free plan is available, named Starter, covering 100 student essays per month with no credit card required. The cheapest paid tier is Standard at USD 15.00 per month on an annual commitment, or USD 19.00 per month without commitment, annual billing being displayed with a 20% discount. Schools & Districts and Higher Ed & Enterprise pricing is quoted on request. A refund may be requested within 14 days of the initial purchase.
- 100 student essays per month
- rubric creation and sharing
- FERPA compliance
- help-centre access and 14 days of premium access
- 350 student essays per month
- Google Classroom integration
- handwritten submissions
- grammar checking
- class dashboard
- chat and email support within 48 hours
- unlimited essays
- Canvas and Schoology integrations
- shared rubric library
- AI plagiarism detection
- bulk user management
- school- and district-wide analytics and reporting
- training and onboarding
- priority support within 24 hours
- API access
- dedicated account manager
- custom integrations
- custom roles and permissions
- bespoke training
- custom analytics and dashboards
- custom support SLA
- Visa
- MasterCard and American Express cards
- bank transfer
- cheque
- and purchase orders for institutions only
Data, GDPR & hosting
A consolidated view of how CoGrader handles your data.
GDPR overview
The site never mentions the GDPR. A full-text search across every collected page returns no occurrence of the regulation, no Article 27 EU representative, no named DPO, no standard contractual clauses and no reference to transfers outside the European Union. The framework CoGrader actually claims is entirely American: FERPA, COPPA, SOPIPA, New York Ed Law 2-d and state student-privacy laws, plus a SOC 2 Type I attestation issued by an independent third-party auditor in January 2024 and claimed alignment with the NIST 1.1 framework. All data is stored and processed in the United States, with no offshore processing claimed. A privacy contact is published at privacy@cograder.com, and CoGrader will sign a school's own data privacy agreement. The privacy policy grants access, update, deletion on request and opting out of non-essential communications; it and the terms are both dated 30 April 2026.
Who owns the data?
CoGrader's terms state that the Service, including all content, features and functionality, belongs to the vendor; users get only a limited, non-exclusive, non-transferable and revocable licence. Any suggestion sent to CoGrader grants it a worldwide, perpetual, irrevocable, royalty-free and sublicensable right. Student submissions are treated as educational records under FERPA, and nothing is collected directly from students, CoGrader working from what the teacher supplies. Data is shared with subprocessors for hosting, analytics and support, and with OpenAI OpCo, LLC in anonymised form. It commits never to sell student personal data, use it for ad targeting or profile a pupil outside an educational purpose; those commitments survive a merger or acquisition. Delaware law governs.
Reuse rights
Teachers can change any AI-generated grade or comment before it is published, and the homepage is explicit about it: nothing reaches a student without you. Grades and feedback can then be pushed back to the LMS in one click or exported as a CSV gradebook. Nothing in the terms restricts a teacher's reuse of the rubrics, feedback and reports produced with the tool for their own teaching; the AI transparency note simply requires that AI outputs be reviewed by the teacher before sharing. What is forbidden concerns the Service itself: reproducing, distributing, modifying or creating derivative works from it needs written consent. Account data can be accessed and updated from the account, deletion requested at support@cograder.com, and data is deleted on the teacher's or the school's instruction or at the end of the contract.
Data retention & training
Hosting summary
A dedicated Data Residency page, dated 30 April 2026, states that all customer data is stored and processed exclusively in the United States. The provider is Google Cloud Platform, region us-central1 (Council Bluffs, Iowa), with data centres in the continental United States. Encryption is AES-256 at rest and TLS in transit. The stated scope covers student PII, submitted essays, generated grades and feedback, teacher account data, school and district configuration, backups and recovery copies. Subprocessors, model providers included, are all said to be US-based, with no offshore data processing; SOC 2 Type I was certified in January 2024. The subprocessor list is maintained and shared on request for procurement and compliance reviews. Model providers named are OpenAI, Anthropic and Meta in the AI transparency note, while the privacy policy cites only OpenAI OpCo, LLC; inputs and prompts are held transiently by those providers, then deleted once outputs are produced. One distinction matters: the marketing site is served from a Netlify edge and the domain's public IP geolocates to Germany (AWS Frankfurt), which is site delivery, not where product data lives.
Things to keep in mind
Risks and trade-offs to weigh before adopting CoGrader.
- Minors' work is processed by third-party language models: the boundary rests on the anonymisation CoGrader performs and on what the teacher actually pastes into the input
- A teacher can unintentionally include direct identifiers in a submission; the vendor states it does not transmit identifiers unless they appear in the content provided
- Plagiarism and AI detection are fallible, so accusing a student on that signal alone is a genuine risk; the vendor suggests treating a flag as the start of a conversation
- Delegated judgement: approving suggested grades week after week can quietly stop being a review, while the terms place the whole responsibility on the teacher
- Effect on learning: feedback generated in volume can become standardised and lose the value of a personal comment
- No identifiable recourse in a dispute: no postal address, no contact page, and Delaware law with exclusive Delaware jurisdiction
- Operational dependencies: a monthly quota can block grading in the middle of a marking period on individual plans, a European school adopting the tool without its own data processing agreement would be exposed, and any incident at the model provider leaves grading unavailable
Setup & Integrations
Technical difficulty
Low. A teacher needs no technical skill: create an account, sign in with Google (OAuth2), and setting up a first batch is described as taking around ten minutes. Connecting Google Classroom or Canvas is presented as easy setup in minutes; the Canvas route requires a Chrome extension. Without an LMS, it is file upload and CSV export. Institutions get bulk user management, training and onboarding, accounts activated within 24 hours of purchase and onboarding sessions within five business days. Only the Higher Ed & Enterprise path, API access and custom integrations, involves development.
Deployment
Integrations
Supported languages
Behind CoGrader
Fundraising
Social
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement CoGrader.
Frequently asked questions
What is CoGrader?
Is there a free plan or a free trial?
What does the cheapest paid plan cost, and can I get a refund?
Which learning management systems are supported?
Are my state's standards and exam rubrics covered?
Is student data used to train AI models, and can a parent object?
Where is the data hosted, and what compliance is claimed?
Does CoGrader address the GDPR, and will it sign my school's data privacy agreement?
Who is responsible for the final grade, and how reliable is the AI detection?
Is there a mobile app or an API, and which languages are handled?
Should you pick CoGrader?
CoGrader is a narrow tool, and that is the point: it grades written work for American K-12 classrooms rather than trying to be a general assistant. Its two real differentiators are the depth of its state-standards rubric catalogue, more than 500 rubrics spanning all 50 states plus AP and IB, and two-way LMS integration that puts grades back in the gradebook without retyping. The posture is openly that of an assistant. The teacher validates every score, and the terms disclaim all responsibility for the grade: what you get is a first pass to review, not a verdict. Schools will find the American compliance file solid and unusually well documented, with FERPA, COPPA, SOPIPA, New York Ed Law 2-d, SOC 2 Type I, US-only residency and a contractual no-training commitment that extends to the model providers. Two reservations matter. For Europe this is a blind spot: the GDPR is never mentioned, hosting is exclusively American and no Article 27 representative is designated, so a European institution would be adopting the tool without the usual guarantees. Corporate transparency is thin as well, with no postal address, no contact page, no named founder or executive, and a legal name knowable only from the site's structured data. The audience figures also call for caution, since two contradictory sets coexist across the site. Financially it is accessible: a permanent free plan of 100 essays a month, and a paid entry point at USD 15 per month on annual billing. For a US teacher or district grading essays in volume, it is a serious candidate; outside that setting, the case is much weaker.
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