COMPUTER-SCIENCE · Pearson Edexcel IGCSE
COMPUTER-SCIENCE/11
Principles of Computer Science
Computer Science · 2024 · Variant 1
Relative difficulty
Analysis source: Pearson Edexcel
Analysis aligned to the official syllabus and assessment design.
3.5 / 5
160
300 min
Develop code (Programming)
Cohort performance
Session statistics from official examination reports
Total marks
160
Duration
300 min
Session difficulty
3.5 / 5
Key examiner messages
Top priorities from the principal examiner before you revise
Analysis of mark distribution reveals that Develop Code and Algorithms remain the most valuable chapters, accounting for over 50 marks across the dual papers.
The biggest differentiator was the final 20-mark question in Paper 2, which required complex manipulation of a 2D array of word pairs.
High-scoring candidates successfully utilized two-dimensional indexing and dynamically controlled loops, whereas weaker candidates struggled with alphabetical comparisons and hardcoded array indices, limiting their progression.
Question difficulty map
How candidates performed on each question in this series
No data available in official reports
Assessment objectives
Skill and AO weighting from official examiner commentary
Skill weighting
Shows the skill mix this paper tested most heavily.
Coding
Weight: 8100%Proficiency
Weight: 788%Algorithmic
Weight: 675%Design
Weight: 563%Technical
Weight: 450%Recall
Weight: 338%Analytical Synthesis
Weight: 225%
Method marks watchlist
Where working, steps, or method marks were commonly lost
No data available in official reports
Recurring mistakes across years
Themes examiners flag in multiple recent sessions for this subject
No data available in official reports
Question choice intelligence
Mean scores and popularity for optional questions (HKDSE electives)
No data available in official reports
Level exemplars
What candidate scripts at each grade level looked like
No data available in official reports
Grade & admission context
How marks relate to grade thresholds and entry standards
Report type
Examiner report — national grade boundaries and question-level commentary
Deep insights
What top candidates did
Techniques and approaches examiners rewarded in this series
No data available in official reports
Command word playbook
How to match each command word to the expected response style
Match the expected response style for “State” questions.
Match the expected response style for “Give” questions.
Give reasons and link mechanism to outcome; each point needs a because/so chain.
Name or point to the specific feature asked for — avoid extra explanation.
State features in sequence or list observable properties — do not explain causes unless asked.
Match the expected response style for “Construct” questions.
Match the expected response style for “Amend” questions.
Present multiple perspectives with evidence; balance breadth and depth.
Time traps
Sections where candidates spent disproportionate time relative to marks
Min per mark: 1.5
Syllabus traceability
Topics linked to questions and mark weighting in this session
Develop code (Programming)
37 marks this session
Algorithms (Problem solving)
17 marks this session
Constructs (Programming)
13 marks this session
MCQ trap analytics
Commonly chosen wrong options from examiner commentary
No data available in official reports
Topic heatmap across years
Mark concentration by topic and exam year for this subject
Mark intensity
Develop code
Develop code (Programming)
Algorithms
Networks
Algorithms (Problem solving)
Constructs (Programming)
Emerging trends, issues and impact (The bigger picture)
Binary
Paper comparison
Marks and duration breakdown across papers in this session
Paper 1: Principles of Computer Science:
Paper 2: Application of Computational Thinking:
Marks you can still earn
Where valid approaches outside the mark scheme may still gain credit
No data available in official reports
Practise what examiners flagged
Target weak topics from this report inside the Revui app
Develop code (Programming)
37 marks this session
Practise in RevuiAlgorithms (Problem solving)
17 marks this session
Practise in RevuiConstructs (Programming)
13 marks this session
Practise in RevuiSelf-diagnostic checklist
Key actions before you sit this paper — copy and tick off as you revise
- 1Message
Analysis of mark distribution reveals that Develop Code and Algorithms remain the most valuable chapters, accounting for over 50 marks across the dual papers.
- 2Message
The biggest differentiator was the final 20-mark question in Paper 2, which required complex manipulation of a 2D array of word pairs.
- 3Message
High-scoring candidates successfully utilized two-dimensional indexing and dynamically controlled loops, whereas weaker candidates struggled with alphabetical comparisons and hardcoded array indices, limiting their progression.
Teacher briefing pack
One-page session summary for tutors and classroom review
2024 2024
Computer Science
Analysis of mark distribution reveals that Develop Code and Algorithms remain the most valuable chapters, accounting for over 50 marks across the dual papers. The biggest differentiator was the final 20-mark question in Paper 2, which required complex manipulation of a 2D array o
Analysis of mark distribution reveals that Develop Code and Algorithms remain the most valuable chapters, accounting for over 50 marks across the dual papers.
The biggest differentiator was the final 20-mark question in Paper 2, which required complex manipulation of a 2D array of word pairs.
High-scoring candidates successfully utilized two-dimensional indexing and dynamically controlled loops, whereas weaker candidates struggled with alphabetical comparisons and hardcoded array indices, limiting their progression.
- Total marks
- 160
- Duration
- 300 min
- Session difficulty
- 3.5 / 5
Session analysis
Analysis of mark distribution reveals that Develop Code and Algorithms remain the most valuable chapters, accounting for over 50 marks across the dual papers. The biggest differentiator was the final 20-mark question in Paper 2, which required complex manipulation of a 2D array of word pairs. High-scoring candidates successfully utilized two-dimensional indexing and dynamically controlled loops, whereas weaker candidates struggled with alphabetical comparisons and hardcoded array indices, limiting their progression.
Updated Jun 13, 2026
Paper breakdown
Paper 1: Principles of Computer Science:
Paper 2: Application of Computational Thinking:
Top chapters
Exam structure insights
Marks by chapter
See where the marks were concentrated so revision time goes to the highest-value topics.
Mark accessibility
Estimate which marks were basic, mid-level, or high-difficulty.
78% within easy or medium reach
Command word frequency
Spot common command words so answers match the expected response style.
Question type mix
Compare the mark share of each paper section and question type.
Short Answer / Theoretical
59·28·38%
Practical Coding / Correction Tasks
44·7·29%
Major Coding Portfolio
(2D Array Challenge)
20·1·13%
Structured / Mathematical Calculations
19·7·12%
Multiple Choice Questions
(MCQ)
6·6·4%
Extended Open Response / Discussion
6·1·4%
Study ROI
Bigger bubbles recur more often; higher bubbles carry more marks, helping you rank revision priorities.
Difficulty trend
Compare difficulty across recent years.
Time vs marks
Compare marks with suggested time allocation to plan exam pacing.
Paper 1 (Theoretica
0.67 m/minTotal marks
80
Total time
120 min
Avg pace
0.67
Cumulative marks ladder
The line is your running mark total question by question; dashed lines are the estimated grade cut-offs. See which question the line crosses your target grade at, so you know how far you must answer cleanly and which questions decide a band.
Next-year prediction
Topics worth watching next year, with the reason shown directly below each bar.
Encryption (Data)
85%85%
Network security
80%80%
Exam tips
Paper format
- Duration
- 2h
- Total marks
- 80
Analysis is paraphrased for study purposes. Always verify against the official examiner report and mark scheme.