diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2030a36..ce2119a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,48 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
## [Unreleased]
+## [3.0.0] - 2026-01-12
+
+### Added
+- **quiz/** - Interactive CLI quiz to test Claude Code knowledge (MAJOR FEATURE)
+ - 159 curated questions across 10 categories (matching guide sections)
+ - 4 user profiles: Junior (15q), Senior (20q), Power User (25q), PM (10q)
+ - Immediate feedback with explanations and documentation links
+ - Score tracking with category breakdown and weak area identification
+ - Session persistence to `~/.claude-quiz/` for progress history
+ - Replay options: retry wrong questions or start fresh quiz
+ - Optional dynamic question generation via `claude -p`
+ - Cross-platform: Node.js (works on macOS, Linux, Windows)
+
+- **README.md** - New "Knowledge Quiz" section in navigation
+ - Added quiz to "Not Sure Where to Start?" table
+ - Collapsible example session showing quiz flow
+ - Links to quiz documentation and contribution template
+
+### Files Created
+```
+quiz/
+├── package.json # Node.js config
+├── README.md # Full documentation with examples
+├── src/
+│ ├── index.js # Entry point + CLI args
+│ ├── ui.js # Terminal display
+│ ├── prompts.js # User prompts (inquirer)
+│ ├── questions.js # YAML loading + filtering
+│ ├── quiz.js # Quiz engine
+│ ├── score.js # Score tracking
+│ ├── session.js # Persistence
+│ └── dynamic.js # claude -p generation
+├── questions/ # 10 YAML files (159 questions)
+└── templates/
+ └── question-template.yaml
+```
+
+### Stats
+- 20+ new files
+- 159 questions covering all guide sections
+- New learning tool for the community
+
## [2.9.9] - 2026-01-12
### Enhanced
diff --git a/README.md b/README.md
index 94190e7..599e917 100644
--- a/README.md
+++ b/README.md
@@ -66,6 +66,7 @@ claude
| Want to check your current setup | [Audit Your Setup](#-audit-your-setup) | 2 sec |
| Want AI assistants to know Claude Code | [LLM Reference](#-llm-reference) | 1 curl |
| Want personalized recommendations | [Deep Audit](#-deep-audit-personalized-recommendations) | 30 sec |
+| Want to test your knowledge | [Knowledge Quiz](#-knowledge-quiz) | 10 min |
### ⚡ Audit Your Setup
@@ -148,6 +149,93 @@ Based on ALL this context, provide:
**Want maximum depth?** Use [claude-setup-audit-prompt.md](./claude-setup-audit-prompt.md) with `claude --ultrathink`
+### 🧠 Knowledge Quiz
+
+Test your Claude Code knowledge with an interactive CLI quiz. **159 curated questions** covering all 10 guide sections, with immediate feedback and documentation links.
+
+```bash
+# Quick start
+cd quiz && npm install && npm start
+
+# With options
+node quiz/src/index.js --profile senior --topics 2,4,7 --count 10
+```
+
+Example Session (click to expand)
+
+```
+============================================================
+ CLAUDE CODE KNOWLEDGE QUIZ
+============================================================
+
+? Select your profile: Senior Developer (40 min to mastery)
+? Select topics to quiz: All topics (recommended)
+
+------------------------------------------------------------
+Question 1/20 [Core Concepts]
+
+At what context percentage should you use /compact?
+
+ A) 0-50%
+ B) 50-70%
+ C) 70-90%
+ D) Only at 100%
+
+? Your answer: C
+
+✓ CORRECT!
+
+------------------------------------------------------------
+Question 2/20 [Hooks]
+
+What exit code should a PreToolUse hook return to BLOCK an operation?
+
+ A) 0
+ B) 1
+ C) 2
+ D) -1
+
+? Your answer: A
+
+✗ INCORRECT. The correct answer is C) 2
+
+Explanation:
+Exit code 2 blocks the operation. Exit code 0 allows it to proceed.
+Other exit codes are treated as errors and logged but don't block.
+
+See: english-ultimate-claude-code-guide.md#72-creating-hooks
+
+------------------------------------------------------------
+ QUIZ COMPLETE
+------------------------------------------------------------
+
+Overall Score: 16/20 (80%)
+
+By Category:
+ Core Concepts 6/7 (86%) [████████░░]
+ Agents 5/7 (71%) [███████░░░]
+ Hooks 5/6 (83%) [████████░░]
+
+Weak Areas (< 75%):
+ - Agents: Review section 4 in the guide
+
+? What would you like to do? Retry wrong questions only
+```
+
+