EduZen AI Tutor — AI System Card

Adaptive tutoring for GCSE / 11+ / KS3 learners aged 9-18. The system explains, hints and assesses but does not award formal grades.

Risk class: high-risk (EU AI Act Annex III §3 — education)

• default tutor
  claude-sonnet-4.5
• mark feedback
  gpt-5.2
• image ocr
  gemini-3-flash

frontier large language models accessed via the Emergent Universal Key — Anthropic Claude, OpenAI GPT, Google Gemini

We do not train models on children's data. Period.

• PII pre-filter and post-filter (regex + classifier + LLM-judge)
• Refusal taxonomy: out_of_scope, unsafe, ambiguous, off_curriculum, requires_human, requires_parent, regulated_advice, exam_cheat
• Confidence score (logprobs + self-consistency n=3) — answers below 0.6 are flagged
• Hallucination tripwire against curated curriculum knowledge base
• No cross-session memory for under-13 by default

• Teacher-in-the-loop for school deployments (transcript visibility)
• Parent-in-the-loop for B2C (weekly digest + on-demand transcripts)
• Monthly red-team panel + safeguarding review

Safeguarding overlay shown to child; session frozen; Designated Safeguarding Lead alerted within 5 minutes.

Retention: 7 years · Storage: MongoDB append-only with hash chain (sha256, prev_hash linked).

• dpo email
  dpo@eduzen.ai
• safeguarding email
  safeguarding@eduzen.ai
• support email
  support@eduzen.ai