What counts as starting revision?
Revision means returning to learning after the lesson and checking whether you can retrieve and use it. Retrieval practice means trying to recall an answer without looking first. Spacing means returning to material on separate occasions, with time between them.
Reading an explanation can help when you do not understand something. Follow it with an attempt from memory or a question, check the answer, and return to it later. Making flashcards or collecting past papers prepares the tools; using them shows what you can do.
A first task might be: close your book, write three questions about a topic you studied last week, answer them, then check your notes. Keep the unanswered questions for another attempt. For more detail, use our active recall and spaced repetition guide.
These learning principles are explained in UCL’s guidance on retrieval and spaced practice, hosted by the Department for Education. They support repeated practice; they do not prescribe a GCSE starting month.

