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Edexia is an AI essay grading tool built for VCE English, trained by VCAA assessors. Here is how it compares to other AI grading tools on the features that matter most for English teachers.
| Feature | Edexia | EssayGrader | CoGrader | ChatGPT (direct) |
|---|---|---|---|---|
| Curriculum-specific grading | VCE English (VCAA rubrics) | Custom rubrics | Custom rubrics | No rubric system |
| Assessor training | VCAA assessors | None | None | None |
| Text-specific knowledge | Full VCE study list | No | No | General knowledge only |
| Teacher review before release | Yes, built in | Manual copy/paste | Yes | No |
| Handwriting support | Yes, scan and transcribe | No | No | No |
| AI detection | Writing replay + behavioural analysis | No | No | No |
| Published accuracy data | 81.2% exact, 98.3% within one (579 essays) | Not published | Not published | ETS study: ~0.9 points below human |
| Data storage | Australian servers, SOC 2 II, ISO 27001 | US servers | US servers | US servers, data used for training |
| Free tier | Flexible school pricing | 25 essays/month | 100 essays/month | ChatGPT Plus subscription |
Built for VCE, not for everyone
Most AI grading tools are general-purpose. They let you paste a rubric and get a grade. Edexia is different because the entire system, from the training data to the rubric engine to the text knowledge bases, is built around VCE English. The AI knows what a strong Medea essay looks like, not just what a strong essay looks like.
VCAA assessor trained
A team of experienced VCE English examiners trains and validates the system. No other AI grading tool has this level of curriculum expertise built in.
Why not just use ChatGPT?
Many teachers have tried using ChatGPT or Claude to grade essays. It works surprisingly well as a first impression, but falls apart at scale. Generic AI has no understanding of VCAA grade descriptors, no text-specific knowledge, and no consistency between sessions. It also stores your student data on US servers with no guarantees about training use. Edexia solves all of these problems with a purpose-built system that stays calibrated and keeps your data in Australia.
If you teach VCE English and want to see how Edexia works with your students' actual essays, get in touch.