EdexiaAI grading and feedback assistant for IB English and Australian curricula, trained on teachers' own marking standards

Edexia is an AI-powered grading and feedback assistant built specifically for secondary English assessment, with a primary focus on the International Baccalaureate (IB) English curriculum and Australian senior frameworks including VCE, HSC, QCE and WACE. Rather than offering generic essay scoring, it pre-loads the relevant rubrics, grade descriptors and study-design requirements, and is continuously trained and validated by a team of experienced educators against real marking standards. The tool's core premise is that AI grading should be calibrated to the way individual teachers and departments actually mark. Teachers blind-grade scripts, align their judgments in calibration meetings, and the system learns from this process so that its draft grades and feedback increasingly match a school's standards. According to the company, in a trial across 579 essays at St Bernard's College, Edexia matched teacher grades exactly 81.2% of the time and fell within one mark band 98.3% of the time. A central design principle is keeping teachers in control. Every AI-generated comment can be edited, rewritten or deleted before reaching a student, teachers can attach personal voice notes to feedback, and a teacher-review mode holds all output until a human reviews and releases it. This positions Edexia as an AI scribe and assistant that drafts detailed feedback for teachers to refine, rather than an autonomous grader. Beyond grading, the platform bundles a range of classroom workflow tools: AI detection with a replay of a student's writing process (showing pastes, tab-offs and AI-likelihood scores), cross-submission reports summarising each student's strengths and next steps, a searchable prompt and stimulus library, blind grading and moderation features with visualised score spreads, and handwriting transcription for scanned responses. It also builds per-text knowledge bases of themes, authorial intent and key quotes for works on the IB study list. For students, Edexia enables a rapid write–feedback–rewrite cycle, allowing them to draft an essay, receive instant feedback, and revise within a single evening. For teachers and departments, the emphasis is on time savings on marking and on improving consistency through moderation and calibration. The company stresses privacy and data governance: training data is siloed to individual or institutional accounts, remains the account holder's intellectual property, and is not used to train Edexia's models. Data is de-identified and stored on Australian-based servers, and the company holds SOC 2 Type II certification, ISO 27001 and ST4S accreditation. As of the captured site, Edexia is offered free to teachers and students with a waitlist, and it is narrowly scoped — strongest for IB and Australian English rather than a general-purpose grader across all subjects.