Complete Revision Guide IGCSE 2025 by straight 9s

Hello, I’m currently in Y12 doing 4 AS levels (Biology, Maths, Further maths, Computer science)

I got all A*9 for my IGCSE subjects. These include:
- Biology, Chemistry, Physics (Edexcel) triple award
- English literature (Edexcel)
- English language (Edexcel)
- Math (Edexcel)
- Business (Edexcel)
- Geography (CIE)
- Computer Science (CIE) - best in my country

Here is what I did during my IGCSE revision journey:

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Start early/time management

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Plan what subject to revise each day (write on a physical calendar - acts as a guideline)

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Leave some days blank

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Don’t have to be time specific (start and rest whenever as long as you successfully follow your plan)

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Align your revision with the exam schedule

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I started revising 2 months before the actual exam, leaving me plenty of time to review my notes multiple times

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Read school notes and annotate further

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Start by reviewing your existing school notes, highlighting key ideas. For any unclear areas or to deepen your understanding, annotate with additional information using resources (Google, ChatGPT, your friend). Use a different colored pen to distinguish these notes.

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Make new notes for less confident subjects

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Make new notes and summarise them in your own words

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Doesn’t have to be visually pleasing as long as you can read it

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Don’t waste time

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Understand everything (search everything up)

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Rest

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Play sports (I played tennis 5 times per week)

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Walk

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Stop revising after 9PM

I didn’t make any flashcards or do past papers (except for math) as I don’t find them effective for me and they are time consuming. However, I did read the mark schemes of theory-heavy subjects (e.g. biology where you have to know lots of keywords) in order to identify any patterns in the answers (how to answer + keywords to include).

Subject specific revision notes that I used:
Chemistry and physics: used my school notes + PMT
https://www.physicsandmathstutor.com/chemistry-revision/igcse-edexcel/

https://www.physicsandmathstutor.com/physics-revision/igcse-edexcel/

Biology: Save My exam + made my own notes + free Biology all topic notes pdf
https://sites.google.com/view/stride101/igcse-revision-resource

https://www.savemyexams.com/igcse/biology/edexcel/19/revision-notes/

English literature:
Of Mice and Men (memorise quotes and used this revision resource for the characters and themes analysis):
https://sites.google.com/view/stride101/igcse-revision-resource

Poems: annotated multiple times and came up with own interpretations (did the same for the texts in English language)

Business: purely used the notes made during lessons in school

Geography: created a google doc containing all the statistics that I had to remember for the case study + used my school notes + bbc bitesize
https://www.bbc.co.uk/bitesize/subjects/zkw76sg

Computer Science: used the textbook + my school notes + watch videos

Maths: used Dr Frost Math and practice past papers
https://www.drfrost.org/index.php

Feel free to ask any questions.