APS is short for Average Points Score and it used as a numerical way of tracking pupil's progress and achievement through Key Stage 1-3. For those teachers and school leaders used to working in National Curriculum levels a National Curriculum level is 6 APS points - i.e. from 2c to 3c is a gap of 6 APS points. This means that each sub-level (i.e. 2c to 2b) is 2 APS points. National Curriculum levels start at point 7 on the APS points scale meaning a 1c is equivalent to 7APS points. From their each sub-level is 2 additional points.