CODEHS Study Guide 2026

Everything you need to pass the CODEHS exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 CODEHS Exam Format at a Glance

Questions

90 min

Time Limit

60.00%

Passing Score

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📚 CODEHS Topics to Study (69)

Artificial Intelligence and Machine Learning Fundamentals · 7 cards Artificial Intelligence and Machine Learning Fundamentals · 7 cards Artificial Intelligence and Machine Learning Fundamentals · 7 cards Assessment and Evaluation Methods · 7 cards Assessment and Evaluation Methods · 7 cards Assessment and Evaluation Methods · 7 cards Assessment and Evaluation Methods · 7 cards Classroom Management Strategies · 7 cards Classroom Management Strategies · 7 cards Classroom Management Strategies · 7 cards Classroom Management Strategies · 7 cards Communication and Collaboration · 7 cards Communication and Collaboration · 7 cards Communication and Collaboration · 7 cards Communication and Collaboration · 7 cards Cybersecurity and Ethical Hacking Accreditations · 7 cards Cybersecurity and Ethical Hacking Accreditations · 7 cards Cybersecurity and Ethical Hacking Accreditations · 7 cards Cybersecurity and Ethical Hacking Accreditations · 7 cards Data-Driven Decision Making · 7 cards Data-Driven Decision Making · 7 cards Data-Driven Decision Making · 7 cards Data-Driven Decision Making · 7 cards Differentiated Instruction · 7 cards Differentiated Instruction · 7 cards Differentiated Instruction · 7 cards Differentiated Instruction · 7 cards Educational Technology Integration · 7 cards Educational Technology Integration · 7 cards Educational Technology Integration · 7 cards

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✍️ Sample CODEHS Questions & Answers

1. Which of the following best describes machine learning?

✓ A subset of AI where systems learn patterns from data without being explicitly programmed

Machine learning is a subset of AI in which algorithms learn from data to improve performance on tasks without being explicitly programmed for each scenario.

2. What is the purpose of a README file in a shared code repository?

✓ To provide an overview of the project, setup instructions, and usage guidelines for contributors

A README serves as the entry point for anyone viewing the repository, explaining what the project does and how to get started.

3. Which HTML element is used to create an ordered list?

✓ ol

The `` HTML element is used to create an ordered list, where each list item is numbered sequentially. This is ideal for presenting steps, rankings, or any sequence where the order of items is significant. Each individual item within the ordered list is defined using the `` (list item) tag.

4. A team member submits a pull request with unclear commit messages. What is the BEST response?

✓ Request changes with specific guidance on writing descriptive commit messages

Requesting changes with constructive feedback helps the contributor improve while maintaining code quality and team communication norms.

5. What is a 'brute force' attack?

✓ Systematically trying all possible combinations to guess a password or key

A brute force attack tries every possible combination of characters until the correct password or encryption key is found.

6. Which CodeHS tool allows a teacher to write custom coding exercises tailored to their local curriculum context?

✓ The custom exercise builder within the teacher dashboard

The teacher dashboard includes a custom exercise builder where instructors can write their own coding prompts, test cases, and grading criteria.

🎯 Free CODEHS Practice Tests

Classroom Management Strategies · 7 questions Professional Ethics in Education · 7 questions Classroom Management Strategies · 7 questions Classroom Management Strategies · 7 questions Artificial Intelligence and Machine Learning Fundamentals · 7 questions Professional Ethics in Education · 7 questions Artificial Intelligence and Machine Learning Fundamentals · 7 questions Classroom Management Strategies · 7 questions Artificial Intelligence and Machine Learning Fundamentals · 7 questions Professional Ethics in Education · 7 questions

📖 CODEHS Guides & Articles

Your CODEHS Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 Flashcards (461)🏆 Exam Simulation