Can someone please give Jonny Griffiths a slap (“Maths - put the brakes on”, 10 February). Doesn’t he realise that the three Rs (results, results, results) are the most important thing? Who cares if a high-achieving pupil is emotionally damaged? Mr Griffiths’ pay and progression may well depend on pupils like these. However, he will need to find more high achievers if he is to maintain standards and avoid Sir Michael’s search for “value for money”.

Mr Griffiths can be very proud of the pupil who was certain to get an A. His A grade is worth more than the grade C obtained by a pupil who struggles but succeeds against the odds and achieves a grade beyond all expectations.

Missie the Mathematician, Head of maths, Lincolnshire.