There is no 'standard' pass-mark for entry to Grammar Schools. Although the pass-mark for a particular school or area varies very little from year to year, there are wide variations across the country. This variation is not due to children being brighter in some areas of the country! In fact, there can be large variations between schools a few miles apart. Pass-marks vary because of the demand for places. An area with few Grammar School places will select perhaps 5% of the children taking the selection test. In an other area 10% of children may be selected. In the latter case the pass-mark will be lower.