KS3 revisions have been adopted into Great Brittan's school lesson plans. KS3 is the acronym for Key Stage 3 or third stage of English education system for students aged 11 to 14. These are lessons that are measured on Statutory Assessment Tests (SAT's). These tests cover Mathematics, Science and English language skills. Here's a great link from the BBC:
. http://www.bbc.co.uk/schools/ks3bitesize
