I WAS surprised to find Peter Wilby and Ngaio Crequer repeating the solecism that, when national curriculum levels are introduced into GCSE grading in 1994, 'level 10 will be higher than the present A grade' ('The real question', 6 September). This is, by definition, impossible.
Candidates achieving the highest marks are at present awarded grade A. From 1994, these candidates will be divided between levels 10 and 9 in proportions which, as far as I know, have not yet been decided.
Peter R Watkins