Scoring an A* in Edexcel or Cambridge IGCSE requires more than memorising the syllabus. Students need to understand concepts, practise exam-style questions, learn how marks are awarded, manage examination time, and revise consistently.
Whether you are studying Cambridge IGCSE or Pearson Edexcel IGCSE, your preparation should be based on the exact syllabus and assessment requirements of your subjects. A focused study plan combined with regular past-paper practice can significantly improve your examination performance.
This guide explains how to prepare effectively and work towards an A* in your IGCSE examinations.
Understand Your IGCSE Syllabus First
Before starting intensive revision, download and review the syllabus or specification for every subject you study.
The syllabus tells you what you are expected to know and helps you identify the topics that require preparation.
For Cambridge students, Cambridge IGCSE online tuition can provide structured support based on the relevant qualification and subject requirements.
Students following Pearson Edexcel can explore Edexcel IGCSE online tuition for support tailored to the Edexcel pathway.
Your first step should be to create a checklist of all syllabus topics and divide them into:
- Topics you understand well
- Topics you partially understand
- Topics you find difficult
- Topics you have not studied yet
This gives you a clear starting point for revision.
Know What an A* Actually Requires
An A* is not achieved simply by completing every chapter in a textbook.
You need to demonstrate your knowledge effectively in the examination.
Depending on the subject, this can involve:
- Accurate calculations
- Correct terminology
- Clear explanations
- Application of concepts
- Evaluation
- Analysis
- Logical reasoning
- Correct use of formulas
- Well-structured written answers
For this reason, understanding how examination questions are marked is just as important as learning the content.
Build a Subject-by-Subject Study Plan
Avoid creating a revision timetable that simply says “Study Biology” or “Study Mathematics.”
Make your plan specific.
For example:
Monday
Mathematics – Algebra
Chemistry – Organic Chemistry
English – Essay Practice
Tuesday
Physics – Electricity
Biology – Human Physiology
Mathematics – Past Paper
A useful study plan should include three types of work:
- Learning new concepts
- Revising previously studied concepts
- Completing examination questions
This prevents students from spending all their revision time reading notes without testing whether they can actually answer questions.
Master the Topics You Find Difficult
Many students spend too much time revising topics they already understand because it feels easier.
If you consistently score 90% in one topic but 55% in another, spending most of your revision time on the first topic is unlikely to produce the biggest improvement.
Use practice tests to identify weak areas.
For every incorrect answer, ask:
Did I not understand the concept?
Did I forget the information?
Did I misunderstand the question?
Did I make a calculation mistake?
Did I lose marks because my answer was incomplete?
The answer will tell you what needs to change.
Use Active Recall Instead of Just Reading
Reading a textbook repeatedly can create the feeling that you know the material without actually testing your memory.
Active recall is more effective because it requires you to retrieve information from memory.
For example, instead of reading a page about photosynthesis five times, close the book and answer:
- What is photosynthesis?
- What are the raw materials?
- What are the products?
- Where does it occur?
- What factors affect its rate?
- How could an experiment investigate these factors?
Then check your answers against your notes.
This technique can be used across almost every IGCSE subject.
Practise Past Papers Regularly
Past papers should become a major part of your preparation, especially as examinations approach.
However, do not wait until the final weeks before attempting them.
Start with individual questions after completing a topic and gradually move towards complete papers.
A useful progression is:
Topic → Exam Questions → Past Paper Sections → Full Past Paper → Timed Full Paper
This allows you to develop both knowledge and examination technique.
Learn How Mark Schemes Work
Completing a past paper is only half the process.
The next step is analysing your answers using the mark scheme.
For every lost mark, determine why you lost it.
For example:
Question: Explain why increasing temperature affects enzyme activity.
If your answer is too general, the mark scheme may require specific scientific terminology and an explanation of what happens to the enzyme at higher temperatures.
Instead of simply recording the incorrect answer, write down the missing concept.
Over time, you will begin to recognise recurring patterns in examination questions.
Practise Answering the Command Words
IGCSE examinations use command words to tell you what type of response is expected.
Common command words include:
- Define – give the precise meaning
- State – provide a specific fact
- Describe – give characteristics or details
- Explain – give reasons or show how something happens
- Compare – identify similarities and differences
- Calculate – work out the numerical answer
- Evaluate – make a judgement using evidence
- Discuss – consider different aspects or viewpoints
Understanding these words can prevent students from giving answers that do not fully satisfy the question.
Do Not Ignore Easy Marks
Students aiming for an A* sometimes focus heavily on difficult questions while losing marks on basic ones.
Careless mistakes can include:
- Incorrect units
- Missing labels
- Incorrect formula substitution
- Spelling scientific terminology incorrectly
- Not showing working
- Failing to answer every part of a question
- Giving an incomplete explanation
- Misreading the question
During practice papers, create a list of your recurring mistakes and review it before every examination.
Improve Your Time Management
Knowing the material is not enough if you cannot complete the examination within the allocated time.
Practise under realistic conditions.
Remove distractions, set a timer, and complete the paper without checking your notes.
Afterwards, calculate:
- How long you spent on each section
- Which questions took too long
- Whether you left questions unanswered
- Whether you had enough time to check your work
With practice, you should become faster without sacrificing accuracy.
Use Different Revision Methods for Different Subjects
There is no single revision method that works equally well for every IGCSE subject.
Mathematics
Focus on:
- Understanding methods
- Formulae
- Worked examples
- Topic-based questions
- Past papers
- Error correction
For mathematics, solving questions is generally more valuable than repeatedly reading theory.
Physics
Combine conceptual understanding with calculations and practical questions.
Make sure you understand formulas rather than simply memorising them.
Chemistry
Focus on concepts, equations, reactions, calculations, definitions, and practical knowledge.
Regular exam questions can help you identify which areas require additional revision.
Biology
Use active recall, diagrams, definitions, processes, and examination questions.
Practise explaining biological processes using accurate terminology.
Business and Economics
Learn the key concepts and practise applying them to scenarios.
Do not rely entirely on memorised definitions. Examination questions often require you to apply your knowledge to the information provided.
English
Practise writing regularly.
Work on:
- Structure
- Vocabulary
- Analysis
- Evidence
- Grammar
- Argument development
- Time management
Review your written answers and identify specific areas for improvement.
Create an Error Log
An error log is one of the simplest ways to improve your examination performance.
Whenever you make a mistake, record:
Question: What did I get wrong?
Reason: Why did I get it wrong?
Correct approach: What should I have done?
Lesson: What should I remember next time?
Review your error log every week.
The objective is not simply to complete hundreds of questions. It is to make fewer mistakes each time you practise.
Revise With Your Own Weaknesses in Mind
Two students studying the same subject may require completely different revision strategies.
One student might struggle with memorisation while another struggles with calculations.
One might understand the content but lose marks because of poor examination technique.
Therefore, avoid copying someone else’s timetable without adapting it to your own performance.
Your past-paper results should determine where you spend your revision time.
Consider Getting Help From an Experienced IGCSE Tutor
Self-study can work extremely well, but some students benefit from structured guidance.
An experienced tutor can help identify weaknesses, explain difficult concepts, review examination answers, and create a personalised study plan.
Gradelao provides access to tutors through its all tutors directory, while students can also explore subject-specific learning options through the IGCSE and O Level subject section.
If you are also preparing for A Levels after IGCSE, choosing an education platform that supports multiple qualifications can make the transition easier. Gradelao offers A Level online tuition as part of its wider academic programmes.
Follow the 3-Stage A* Revision Strategy
A simple way to organise your preparation is to divide it into three stages.
Stage 1: Learn
Complete the syllabus and make sure you understand every major concept.
Do not move past difficult topics simply because they are uncomfortable.
Stage 2: Practise
Start solving topic-based examination questions.
Use mark schemes to understand how answers are assessed.
Stage 3: Perfect
Move to complete timed papers.
Analyse every mistake and repeatedly practise your weakest areas.
This final stage is where many students make the difference between knowing the syllabus and performing at an A* level.
What Should You Do in the Final Month?
During the final month, avoid trying to learn everything from scratch.
Your focus should shift towards:
- Full past papers
- Weak topics
- Mark-scheme analysis
- Timed practice
- Error correction
- Key definitions and formulas
- Examination technique
Create a list of your five weakest areas for each subject and prioritise them.
At this stage, quality revision is more important than simply increasing the number of hours you study.
What Should You Do the Night Before the Exam?
Avoid an all-night study session.
Instead:
- Review key formulas and definitions
- Read your mistake list
- Prepare your stationery
- Check your examination arrangements
- Get enough sleep
- Avoid trying to learn large new topics
A rested brain is more useful in an examination than a few additional hours of exhausted revision.
Frequently Asked Questions
How can I get an A* in Cambridge IGCSE?
Start by understanding the complete syllabus, identify weak areas, practise past papers, study mark schemes, improve examination technique, and review your mistakes consistently.
How can I get an A* in Edexcel IGCSE?
Follow the Edexcel specification carefully, practise Edexcel-style examination questions, use past papers and mark schemes, and focus on both subject knowledge and examination technique.
How many hours should I study for an IGCSE A*?
There is no universal number of hours that guarantees an A*. The quality and consistency of your preparation matter more than a fixed number of hours. Your revision time should increase around difficult topics and upcoming examinations.
Are past papers enough to get an A*?
No. Past papers are extremely useful, but they should be combined with syllabus coverage, concept learning, active recall, targeted revision, and analysis of mistakes.
Is Cambridge IGCSE harder than Edexcel IGCSE?
Neither examination board should automatically be considered easier or harder. Difficulty can vary by subject, syllabus, assessment structure, and individual student strengths.
Can an IGCSE tutor help me achieve an A*?
A qualified tutor can provide personalised explanations, identify weaknesses, review examination answers, and help improve exam technique. However, the student’s own consistent practice and preparation remain essential.
Final Thoughts
An A* in Edexcel or Cambridge IGCSE is achievable when preparation is structured around the actual examination requirements.
Do not rely on memorisation alone. Understand the syllabus, practise active recall, solve past-paper questions, analyse mark schemes, track your mistakes, and repeatedly work on your weakest areas.
The most important principle is simple:
Learn the content → Practise exam questions → Analyse mistakes → Improve → Repeat.
With consistent preparation and the right strategy, you can turn your revision into measurable progress and give yourself a much stronger chance of achieving an A*.