Emoticons, which represent moods and facial expressions using a combination of punctuation marks, numbers and letters, are the darling of the texting world.
With a grade sometimes determining whether or not a student got the university place they wanted, there was a big increase in the numbers asking for A-level re-marks.
Head teachers have claimed that grades were manipulated downwards unfairly - and Mr Lightman said the high numbers of grades now being changed after re-marks confirmed the doubts of head teachers.