# Edexia

> Edexia is a Brisbane-founded, Y Combinator-backed (W25) AI teaching assistant that grades essays and written work in each teacher's own marking style. Built for secondary English across IB, VCE, HSC, QCE and WACE curricula, it learns from teacher corrections to deliver consistent, rubric-aligned feedback, cutting marking time while keeping educators in control of every comment before it reaches a student.

- **Founded:** 2023
- **Headquarters:** Brisbane, Queensland, Australia
- **Founders:** Daniel Gibbon (Co-Founder & CEO), Nathan Wang (Co-Founder & CTO)
- **Team size:** ~4-19 employees
- **Products:** AI Essay Grading & Feedback, Teacher-Controlled Feedback, AI Detection & Keystroke Replay, Calibration & Moderation Tools, Handwriting Transcription & Prompt Library
- **Notable:** Accepted into Y Combinator Winter 2025 batch, 81.2% exact match with teacher grades across 579 essays; 98.3% within one mark (St Bernard's College trial), Live in 40-50+ Australian schools

## Products & services

- **AI Essay Grading & Feedback** — AI teaching assistant that grades essays and written assignments in each teacher's own marking style, aligned to the rubric, across any subject, year level or format.
- **Teacher-Controlled Feedback** — Teachers can edit, rewrite, approve or hold every AI-generated comment before it reaches a student, plus add personal audio voice notes.
- **AI Detection & Keystroke Replay** — Replays the keystroke-by-keystroke writing process and provides AI-likelihood scores to help teachers judge authenticity.
- **Calibration & Moderation Tools** — Benchmarking, blind grading of de-identified scripts, and moderation reports with visualizations for consistent marking across a department.
- **Handwriting Transcription & Prompt Library** — Scans and converts handwritten responses, with a library of 100+ filterable practice prompts by text, theme and difficulty.

## Achievements

- Accepted into Y Combinator Winter 2025 batch
- 81.2% exact match with teacher grades across 579 essays; 98.3% within one mark (St Bernard's College trial)
- Live in 40-50+ Australian schools
- SOC 2 Type II, ISO 27001 and ST4S accredited
- Founders turned down larger A$2M VC offers to join YC
- Backed by over A$6.5M including the co-founders of ClassDojo
- Featured at TEDx, in the ISTE EdTech Index and on 9 News

## Latest updates

- **2024-12** — Featured by Y Combinator as an AI teaching assistant that learns each teacher's grading style; partnered with 11 Australian schools in Q4 2024 with 30 more arranged for Q1 2025.
- **2025-01** — Founders relocated to San Francisco for Y Combinator W25; reported raising ~US$4.2M and securing school contracts.
- **2025-06** — Reported live in 40+ schools across Australia, backed by over A$6.5M including ClassDojo co-founders.

## Links

- Website: https://www.edexia.com/
- LinkedIn: https://www.linkedin.com/company/edexia-ai
- Twitter/X: https://x.com/EdexiaAi
- Instagram: https://www.instagram.com/edexia.ai/

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Profile page: https://yespress.io/edexia-yc-w25
Published by YesPress — https://yespress.io
Last updated: 2026-07-31