Last updated: 2026-08-23
Launched in 2023, Edexia is an AI grading assistant that checks essays against a school's VCE, HSC, QCE, WACE or IB rubric. In a trial of 579 essays it matched a teacher's exact grade 81.2% of the time, holding every grade for teacher approval before a student sees it.
About Edexia
Edexia is an AI teacher assistant founded in 2023 by Brisbane, Australia natives Daniel Gibbon and Nathan Wang. The company joined Y Combinator's Winter 2025 batch, and the founders used the momentum to close more than $600,000 in school contracts during the program, which helped them raise roughly $4 million in equity funding. The product grades student essays against a school's own assessment rubric, covering Australia's VCE, HSC, QCE and WACE English courses alongside the International Baccalaureate's English syllabus. It visually breaks down which criteria it weighed on each script and updates that breakdown every time a teacher corrects a grade, so the model keeps adapting to a department's actual marking standards rather than a generic template. Nothing reaches a student until a teacher reviews, edits or deletes the AI-generated comments and approves the grade. A mobile-capture flow scans and transcribes handwritten scripts before grading begins, and a writing-replay feature records the keystroke history behind a submission as a second signal against AI-written work, instead of relying on text analysis alone. Department heads get separate tools to check that markers are grading consistently with one another. Edexia is free for individual teachers and students, with school-wide access sold through a private walkthrough and a custom contract rather than a published self-serve tier. It carries SOC 2 Type II, ISO 27001 and ST4S certification, stores data on Australian servers, and does not train its models on customer data. There is no learning-management-system sync today; a department currently uploads rosters and scripts straight into the Edexia platform.
Pricing
Free for individual teachers and students. School-wide licenses are negotiated by custom contract after a private walkthrough; no published per-seat price for departments or districts.
Key Features
- Rubric-Aware Grading: Grades an essay against a school's own rubric in 30 to 90 seconds and updates its criterion breakdown each time a teacher corrects a grade.
- Teacher Approval Gate: Holds every AI-generated grade and comment for teacher review, edit or deletion before a student can see it.
- Handwriting Transcription: Scans and transcribes handwritten essays via a mobile-capture flow, verifying the transcription before grading runs.
- Writing Replay AI Detection: Records a keystroke-by-keystroke writing replay alongside an AI-likelihood score, rather than relying on text analysis alone.
- Department Moderation: Lets department heads compare grades across a cohort and run blind grading on de-identified scripts to check consistency between teachers.
- Prompt Library: Provides a searchable library of assessment prompts filterable by text, theme and difficulty.
Pros
- Landed on the exact same grade as the class teacher 81.2% of the time, and within one band 98.3% of the time, across a 579-essay pilot at St Bernard's College.
- Already holds ISO 27001, SOC 2 Type II and ST4S certification, useful for a school district vetting a vendor's security posture before rollout.
- More than 50 schools already use Edexia, whose teacher-approval workflow keeps every AI-drafted grade out of a student's hands until a teacher signs off.
Cons
- No LMS sync exists today, so teachers upload essays directly into Edexia instead of through an existing gradebook or Canvas-style platform.
- Built only for IB, VCE, HSC, QCE and WACE English; other subjects and curricula aren't supported yet.
- No API or public developer docs were found, so integrations depend on Edexia's own roadmap rather than a school's IT team building against it.
Frequently Asked Questions
What are Edexia's pricing plans in 2026?
Edexia does not publish per-seat pricing. It is free for individual teachers and students to use, and schools negotiate a license through a private walkthrough with the Edexia team rather than a self-serve checkout.
Is Edexia free to use?
Yes, individual teachers and students can use Edexia at no cost. School-wide rollout, moderation tools and admin dashboards are arranged separately through a custom school contract.
What are Edexia's closest competitors?
Grammarly and Quillbot handle general grammar and paraphrasing feedback for individual writers rather than rubric-based grading for a whole class. A general assistant like ChatGPT can draft feedback too, but it has no built-in curriculum rubric memory and no department moderation tools.
Is Edexia better than ChatGPT for grading essays?
For curriculum-aligned grading, yes: Edexia is trained on a school's specific rubric and holds every draft for a teacher's approval before it reaches a student, while ChatGPT has no rubric memory and no approval workflow built in. ChatGPT is faster to try with zero setup, but Edexia is built for a whole department's marking process.
How do you set up Edexia?
A school typically starts with a private walkthrough with the Edexia team, then a teacher uploads their first rubric and a batch of essays. There is no self-serve signup for schools, so first use depends on scheduling that initial walkthrough.
Top Alternatives
- Grammarly: Pick Edexia if you need rubric-based grading for a whole class; pick Grammarly for individual grammar and clarity checks.
- ChatGPT: Pick Edexia if you need curriculum rubric memory and a teacher-approval workflow; pick ChatGPT for quick, unstructured feedback.
- Quillbot: Pick Edexia for department-wide essay grading; pick Quillbot when a student needs paraphrasing or grammar help on their own draft.