Assess student understanding of user input, testing, and debugging with this ready-to-use quiz for Computer Science Principles.

Unit 3 Quiz B covers Lessons 3.4–3.5, focusing on how programs collect information from users, how input affects output, and how programmers test programs for correctness. Students practice predicting output with user input, identifying expected vs actual output, and explaining why testing is necessary—even when programs run without errors.

This quiz is an ideal checkpoint before moving into conditionals and decision-making.

✅ What’s Included

✔ Student quiz (printable & digital-friendly)
✔ Clear point values (25 points total)
✔ Predict-the-output questions using input()
✔ Testing & debugging reasoning scenarios
✔ Short-answer explanation questions
✔ Teacher answer key included

🧠 Skills Assessed

• Understanding user input and input/output flow
  
• Predicting program output based on user input
  
• Identifying expected vs actual output
  
• Explaining why testing is important
  
• Developing a debugging mindset
  

🧑‍🏫 Teacher-Friendly Design

• No prep required
  
• Sub-ready format
  
• Clear structure and spacing
  
• Aligns directly with CSP Big Ideas
  

📌 Programming Language: Python
📌 Grade Levels: 9–12, Higher Education, Adult Education
📌 Time Required: ~25–30 minutes