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Chapters

This textbook is organized into 32 chapters covering all 578 concepts in the learning graph, in the same three parts as the course description: Foundations (Chapters 1–4), this project's specification and design (Chapters 5–23), and the three personas who use the finished system (Chapters 24–32).

Chapter Overview

  1. From Learning Management Systems to the Experience API — 15 concepts
  2. The Anatomy of an xAPI Statement — 15 concepts
  3. IEEE Standardization of xAPI and cmi5 — 16 concepts
  4. Standards Governance and the Wider Interoperability Ecosystem — 14 concepts
  5. System Context and the Five Architectural Planes — 15 concepts
  6. Multi-Tenancy, Rosters, and Pseudonymous Identity — 15 concepts
  7. The Property Graph Data Model — 21 concepts
  8. Summary Vertices and Statement Ingestion Mechanics — 23 concepts
  9. The Twelve Core LRS Functions — 12 concepts
  10. Choosing the Technology Stack — 17 concepts
  11. Architecture Decision Records and the Capacity Model — 23 concepts
  12. Bayesian Knowledge Tracing for Mastery — 8 concepts
  13. Component Design in Depth — 25 concepts
  14. Kafka Topics, ClickHouse Schema, and Graph Constraints — 22 concepts
  15. Privacy Enforcement and Dashboard Mechanics — 23 concepts
  16. The Container Image and the Role Dispatcher CLI — 21 concepts
  17. Docker Compose, the Makefile, and the Image Supply Chain — 27 concepts
  18. Configuration, Migration, Backup, and Rollout — 21 concepts
  19. Failure Modes and Verification — 20 concepts
  20. Spec Deviations, the Delivery Roadmap, and Open Questions — 16 concepts
  21. Hardware Sizing, Cost, and the Development Environment — 19 concepts
  22. Proving the Architecture: the MVP Plan — 15 concepts
  23. Production Infrastructure and Cloud Services — 24 concepts
  24. Meet the Three Personas and the Admin UI Surface — 15 concepts
  25. District Administrator: Rosters, Deployments, and Registries — 14 concepts
  26. District Administrator: Access Control and System Configuration — 14 concepts
  27. Compliance, Privacy Law, and District-Level Reporting — 19 concepts
  28. Teacher Dashboards and Student-Level Reports — 11 concepts
  29. Class-Level Reports and Teacher Tools — 18 concepts
  30. Textbook Author Dashboards and Content Reports — 12 concepts
  31. Designing and Reading A/B Experiments — 25 concepts
  32. The Producer Contract: Writing Conformant Statements — 23 concepts

How to Use This Textbook

Chapters are ordered so that every concept appears after all of its prerequisites — you can read straight through, or jump to a chapter directly once you've covered its prerequisite chapters (listed at the bottom of each chapter page). Part 1 assumes no prior xAPI or IEEE-standards knowledge; Part 2 assumes familiarity with JSON and RESTful HTTP APIs; Part 3's persona chapters require no additional technical background beyond what Parts 1–2 introduce.

Note: Each chapter includes a list of concepts covered. Make sure to complete prerequisites before moving to advanced chapters.