The exam, which all children were required to take in their final year of primary school, decided what sort of education a child could go on to. Those who passed went to grammar schools, while those who failed didn't. There are now no grammar schools in Wales or Scotland.
In Northern Ireland, this is the last academic year to have an 11-plus style exam. In England, 164 grammar schools remain, and pupils wishing to attend must still pass an exam. Competition in these areas is fierce, and a BBC Radio 4 programme has found parents spend as much as £1,800 on private tuition to help their children. But without paying a penny to a private teacher, you can have a go by trying our timed mini-version of the test.
You have 10 minutes to answer 15 questions. Click the "start" button below and begin.
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