Edexia

Edexia's free, curriculum-tuned approach to AI grading is unusual — it actually solves a real problem for secondary English teachers in Australia and IB schools. The core pitch is simple: upload essays, get AI drafts of feedback, edit what you don't like, and release only when ready. That teacher-in-the-loop model sidesteps the usual 'black box' complaints. The 81.2% exact match rate on 579 essays at St Bernard's College is credible for a niche grader, and the 98.3% within-one-band stat suggests it rarely goes wildly off. We'd reach for this when you're drowning in essays and need a first pass that respects your standards. The handwriting transcription and AI detection with writing replay are practical extras — especially the replay, which lets you see keystroke-by-keystroke how a student wrote. Where it bites: it's only for English and only for those specific curricula (VCE, HSC, QCE, WACE, IB). If you teach in the US or any non-Australian/non-IB system, you're out of luck. There's also no API and no documented LMS integrations, so larger schools with entrenched systems may struggle. The closest alternative is something like Gradescope, which supports multiple subjects and has LMS integration, but costs per student and lacks curriculum-specific rubrics. Edexia is free and focused — that's its strength and its ceiling. For individual teachers or departments in its target regions, it's a smart pilot. For district-wide deployment, the missing integrations and narrow scope are real barriers.